Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e5f890c96765d3…

MALICIOUS

PDF

195.2 KB Created: 2021-05-16 17:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f071a22e4a1a1d824ff4a5470984f6dc SHA-1: fc9751ed02b016f253abf53e2795c5393b24a0bc SHA-256: f0e5f890c96765d31c73c1dccd71de8f363b57ebe4cc13efbda47f3f7354d8f3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external URLs, with some heuristics indicating a link farm on disposable hosting. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7171

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/strik?utm_term=d%2526d+3.5+heroes+of+horror+pdf PDF link annotation
    • http://insuranceautousa.com/52263475852tbr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_6058751cd3188.pdfIn PDF document text
    • https://cdn.sqhk.co/jisokemefaz/xhhhewh/mirror_home_workout_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/jaCijeD/dutivibavizal.pdfIn PDF document text
    • http://womixiwulaj.22web.org/baps_bal_sabha_book.pdfIn PDF document text
    • http://zupedaganivo.66ghz.com/70523387537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5fddb685801d6.pdfIn PDF document text
    • http://vwwv-avito.online/cluedo_detective_notes_app902f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/bcjcARb/34964531487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6016c3ef07cc9.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://nabifasilazug.rf.gd/paliwarusanerepup.pdfIn PDF document text
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_1584ccfd58574d3fab74891d4539a555.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca39d479-ee07-43c9-a48d-9a92297d6db3/apple_canada_square_one_book_appointment.pdfIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_4594bf69268948adaa8adf63830fead6.pdf?index=trueIn PDF document text
    • https://7c9e9c40-2b96-4f88-8065-b5ff5e495659.filesusr.com/ugd/3bfcae_747efe1733fc488d9f6ebfe6c3504e9c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f0f682-680d-4d94-9b90-b9df7960d51e/toro_snow_blower_manuals_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43afcf33-a492-45d0-a420-4cef3ee2fd1b/25126811134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf16ae1-1a12-4bbf-84af-3446b505e024/28986595142.pdfIn PDF document text
    • http://zunebitalubale.rf.gd/56699155487.pdfIn PDF document text
    • https://4b3c1411-62fe-4b74-ac0d-dad8ff5dd90a.filesusr.com/ugd/d10829_4a9b2d9fdac94c548f4a5b4480e0c11c.pdf?index=trueIn PDF document text
    • https://56a79910-2d97-40e4-a1df-bca3b17021d7.filesusr.com/ugd/2721fc_9b50180ba4ea40a2b23a7d82962c3b57.pdf?index=trueIn PDF document text
    • http://kawojimulogizef.rf.gd/dosumojaxapevepe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/lgpl.htmlRegularDanhHongIn PDF document text
    • http://www.geocities.com/dnhhngIn PDF document text
    • http://scripts.sil.orgIn PDF document text
    +3 more URL(s)

Extracted artifacts 18

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_011_off00025a05.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x25A05 19380 bytes
SHA-256: fe2a5b1e0db069a79176a433911fc1acc1f90a34d8006d0dff9401b5cf05df50
font_00_sfnt_off00012b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B70 6148 bytes
SHA-256: 0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207
font_01_sfnt_off00013b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B51 3612 bytes
SHA-256: 59ba68889a6ddfc00e7c371aa63d253c82c2fd60b6adad43b7b5c23629b027ac
font_02_sfnt_off00014968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14968 18488 bytes
SHA-256: f5061026fcec9e410f5850ac2b2ee57e7ce627d934be6146f6bed411ff7683bc
font_03_sfnt_off00017e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E82 3484 bytes
SHA-256: 866fd8f85cd0130a59e26d5d2ef72782554194052287c2ce3d346dbb443db71f
font_04_sfnt_off000189ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189EE 2604 bytes
SHA-256: d4cda5a9ecb2558448f754249352cd4d73a8f7efff03060ee9a54ebf713292d1
font_05_sfnt_off000194fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x194FD 3048 bytes
SHA-256: e23308bb06bff427f4fe2d795198e016b2e9db23d45fd702446b15ef1a1323d1
font_06_sfnt_off0001a108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A108 2656 bytes
SHA-256: 1620336da6018abf771a3b64a4739dbc5cc5761e5bcfd31f9568e9163b5e6178
font_07_sfnt_off0001abee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABEE 65120 bytes
SHA-256: 62bdcba615b5f995c55c2e067fa359eba0a52a64818b78b88a419bc6a6cbb5b6
font_09_sfnt_off00027b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B36 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
font_10_sfnt_off0002893b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2893B 4140 bytes
SHA-256: b7882c459d94d9fb05ee491b72d0ee9c35e8d4bc9ed5787c7a0b3ba78fd6bc86
font_11_sfnt_off0002962c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2962C 3840 bytes
SHA-256: 869700f7b438b0b0f23cfbf3a170597ae1a6b01e9ba9f60fe7298d5eefb98f81
font_12_sfnt_off0002a43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A43E 4544 bytes
SHA-256: 059070cd149d8977ca78cfd4fb95e986a02e671cdb4f7bc81c5301fc7fc55836
font_13_sfnt_off0002b24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B24D 2108 bytes
SHA-256: b3976ad28991401f3a7e0d936621f3963ed8fd81aff5bedc9e25cf6548b1959b
font_14_sfnt_off0002bc2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC2B 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_15_sfnt_off0002c9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9D5 4216 bytes
SHA-256: a1cdd12e7202d5b84db6fb10a0d71bc51fe40057a00e34d9df4032cbf4e7d52e
font_16_sfnt_off0002d791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D791 7916 bytes
SHA-256: b6d8f72b59c47e884b0b6746a25c5cbd96eb494928042fd8f7d2b0ad088f297a
font_17_sfnt_off0002ec25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC25 2328 bytes
SHA-256: 6d897259d7ab9db79b0dbb16904cd99ff486aa7f4a475590a5d3e44eab6e0eed

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