Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2937e023263b3ff…

MALICIOUS

PDF

76.4 KB Created: 2021-03-16 09:37:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 649bdfc5c6b5155ebc3a14b7e9d897ee SHA-1: 8fe10251fa77b643b868ef143660484cb01b5811 SHA-256: e2937e023263b3ff749119ce31d0e3a15ea3be66109487f13ca4ddd7c758665a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. The document body is heavily obfuscated, but the presence of embedded URLs and the overall structure indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=guide+gear+layout+hunting+blind
    • http://bettyloustintruckbbq.com/kathi_tamil_movie_songs_in_masstamilanr7bj9.pdf
    • http://motorutovibipe.sportsontheweb.net/star_wars_thrawn_trilogy_books.pdf
    • http://bulibujirifubof.scienceontheweb.net/heap_sort_algorithm_with_example.pdf
    • http://winclean-shop.space/wabumupafemonopiferexoqlunq.pdf
    • http://bedomukuruxe.22web.org/52173995395.pdf
    • http://jijuduli.mywebcommunity.org/brideshead_revisited_sheet_music.pdf
    • http://opssmall.space/how_to_program_haier_air_conditioner_without_remotepx6lr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rimalapotozuf.epizy.com/percy_jackson_and_the_lightning_thief_movie_luke.pdf
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_f310f463012149ad85d50e6ccbfef2d6.pdf?index=true
    • https://aa4de0c4-a7fb-47f6-97fe-5721705e71c1.filesusr.com/ugd/824332_b3760cbabecf4f6bb7d47327dda135fb.pdf?index=true
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_efd61cb245d747c385ff5230428ed166.pdf?index=true
    • https://c3a7a64c-5591-430b-94d7-c2eadfdf3523.filesusr.com/ugd/966478_2db585a581174621b5c2861d4f9f9ea9.pdf?index=true
    • https://68358877-4ee6-4e53-94f7-4bd9665c1f53.filesusr.com/ugd/3bbd68_db4e40a29eab4427ac67bd544e6347d9.pdf?index=true
    • https://5090cb7a-f7dd-45b7-a4a3-960150b62b23.filesusr.com/ugd/dfd4af_5f59dfbd19cf43e1aa41f78b252667a4.pdf?index=true
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_5b8261b2f7274a4fbad9946b0421fda8.pdf?index=true
    • https://e114ad41-1367-46fe-a5fd-427bf640f69d.filesusr.com/ugd/a63c55_fab3fd6e61204730b5ef33dae042cef9.pdf?index=true
    • http://bebovufuvuji.myartsonline.com/lorabudoxaminum.pdf
    • https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_bdd5ce083ef7419b943637f6dcda6fe3.pdf?index=true
    • https://712e085e-8422-4094-ae2e-709d430f1fc9.filesusr.com/ugd/bf8edb_da3990db16e847a8b8fc09b5376b562f.pdf?index=true
    • http://zilomit.epizy.com/55057117180.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee8c.bin
008ade6f744c59590970d8ee36dd92338f86043144dc76d92937bd2dd311611b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8C 5184 bytes
font_01_sfnt_off00010030.bin
7c6f138fd16d6a63f8fea22d3cc0c648df3daecf50a2a81482509f5d0e056d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10030 10744 bytes

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