Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bfdb6a5ceb4403…

MALICIOUS

PDF

76.1 KB Created: 2020-12-28 04:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 86dc1d973544a8484f0d072058abd343 SHA-1: 0cfee125a13cdc0df53db1b1093d1e05c16f05bd SHA-256: 75bfdb6a5ceb44032b0077c2967cdedf26da1a2f8840eacafa76028c1e82a678
224 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It impersonates Facebook and uses urgency lures to trick users into clicking a link that leads to a credential harvesting page. The PDF also contains a large number of external links, likely for SEO manipulation or to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/2c2ada292e5078.pdf.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafffi.ru/strik?utm_term=at+the+races+racecards+for+saturday PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446015/normal_5fa6a473030f5.pdfIn PDF document text
    • https://gimelukisisira.weebly.com/uploads/1/3/4/0/134040832/2c2ada292e5078.pdfIn PDF document text
    • https://lokeduvedip.weebly.com/uploads/1/3/4/8/134885922/mipatovemiti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5fa8cebc37481.pdfIn PDF document text
    • https://cdn.sqhk.co/zatugudaxaji/ShlXq3k/45893513136.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f444b14-807f-4d96-b76f-f5fec8351bbe/zifupekuliravedal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce2dfde-cd46-4009-885b-6cc31587ff20/mr_and_mrs_adelman_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30499401-0857-4860-8191-ffe67d1beee5/40747533289.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/slang_definition_of_chops.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0801900f-5ab8-40d6-94a7-dbb6f695a597/pamewaposodovuroserot.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/everybody_writes_ann_handley.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/bajaj_boxer_ct_100_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/reportar_lampara_de_alumbrado_publico_chihuahua.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cf9abe-f120-4b8a-b811-33f992e5e9b1/enterprise_architect_spark.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA2 5168 bytes
SHA-256: 426034e77181a53be011380eeb834516861cde24ae76d7056fa8e34b86db6c32
font_01_sfnt_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 3124 bytes
SHA-256: 78d7f19928567655e6525c0c84c8bf3573372a0ba40a752cfecf974aff13b6cb
font_02_sfnt_off0000fd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD30 11108 bytes
SHA-256: 3a6d7c6ef3de43abf3b01eb5ecec4b6b9535e88901841ffe6014608060ae4354

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