Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a576d168876fd4…

MALICIOUS

PDF

83.3 KB Created: 2021-04-03 23:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cf551c67e5a1838c5987d80dc6ae57d SHA-1: de755a704c985e53e03151febf1a08f343fed254 SHA-256: e5a576d168876fd47f9c94f30295a7aa353f8b6c8add4f688ef816186522264c
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing and trojan threat. The embedded URL and the document's content suggest a lure to download further malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be instructing the user to decrypt a payload, likely to evade gateway scanning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/123?utm_term=album+song+remix+ringtone
    • https://cdn-cms.f-static.net/uploads/4485711/normal_60410c473171e.pdf
    • https://cdn-cms.f-static.net/uploads/4448735/normal_603c28d660144.pdf
    • http://vodenupomotafi.22web.org/ashville_college_new_uniform.pdf
    • https://cdn-cms.f-static.net/uploads/4425227/normal_60420bdd406a5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1ead6b6a-12b9-40c6-8814-daf14b7f6dc2/jigivoluvunuxozotuxijuzu.pdf
    • https://uploads.strikinglycdn.com/files/e1760a47-feb1-412d-9969-c9b0f97721ad/63101064013.pdf
    • https://uploads.strikinglycdn.com/files/6a7fcf7a-caab-4970-a97b-5ee614e1326e/86314216290.pdf
    • https://uploads.strikinglycdn.com/files/d6e175cd-0160-4147-bb6d-208c1b252a04/how_to_increase_incline_bench_press_strength.pdf
    • https://uploads.strikinglycdn.com/files/9fde8dd2-15ad-4a97-a853-883088cfdaa9/vonesakifujokereduludu.pdf
    • https://uploads.strikinglycdn.com/files/5793f155-5ce5-497f-8d17-c28396951fec/gebezadirokixepi.pdf
    • https://uploads.strikinglycdn.com/files/a8274b59-fef9-4c16-839c-9796ca3620d9/59562868342.pdf
    • https://uploads.strikinglycdn.com/files/6ea367c2-533b-4641-aed3-ff668b271ab2/brother_hl-2040_driver_windows_10_64_bit_indir.pdf
    • https://uploads.strikinglycdn.com/files/0d522e32-9f1b-40ff-89a0-9264d2e7f76f/fapodetojepew.pdf
    • http://jasukapikubov.rf.gd/pepulesu.pdf
    • http://kevatudoritek.rf.gd/79797311055.pdf
    • http://zakuvusebaj.epizy.com/62025671133.pdf
    • https://uploads.strikinglycdn.com/files/d65b0dd4-7063-4e48-bebd-540b0f9a0b3f/what_does_the_prefix_trop_mean_in_biology.pdf
    • https://uploads.strikinglycdn.com/files/1c83e200-8a42-4072-a991-786f84245838/is_nvivo_worth_it.pdf
    • http://todosix.epizy.com/phd_study_plan_example.pdf
    • https://uploads.strikinglycdn.com/files/fe62ec7d-0dbf-4383-bc88-cc496f848cf0/can_i_use_my_dunkin_donuts_gift_card_online.pdf
    • https://uploads.strikinglycdn.com/files/69a0384f-6a8b-464d-8af7-ad4d7a41a1f4/www_podomatic_com_espaol.pdf
    • https://uploads.strikinglycdn.com/files/76c12123-66d7-4c6f-a221-e75ae1f862a6/pedro_como_agua_para_chocolate_autor_y_nacionalidad.pdf
    • https://uploads.strikinglycdn.com/files/bed74e3f-2132-4b91-9baa-041082bc043f/mlk_letter_from_birmingham_jail_summary_sparknotes.pdf
    • https://uploads.strikinglycdn.com/files/4d411d38-b009-42c4-9f3c-231250ab2d9b/87011790439.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_off00010984.bin
b1121f1ac77b2b92b29d02f4038e5d072cc9fab3b9c027936528dc6477e8634f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10984 4992 bytes
font_01_sfnt_off00011a6e.bin
2ec212521835b40bb770fe40aa625d7a96a8cbcb75ae0369ec7574bb1a43ede2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6E 10984 bytes

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