Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fec96b0666bd39…

MALICIOUS

PDF

70.2 KB Created: 2020-11-14 14:56:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ed3db085dbe82a51220dbe93f4e06624 SHA-1: dc5495a87636fffaecb261c18f29163f2cb8a2fc SHA-256: 17fec96b0666bd39b8771093e52c42f157d4f6dc2fb23583b9edfd0baa1e5022
176 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or scam attempt. The presence of numerous external links, including one to 'traffnew.ru', suggests a link farm or redirection mechanism. The 'SE_CALLBACK_LURE' heuristic further supports a phishing pretext, likely aiming to trick users into visiting a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://traffnew.ru/strik?utm_term=scissor+lifts+training PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404984/normal_5fa44341410c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_5fa5813243620.pdfIn PDF document text
    • https://silemixijotin.weebly.com/uploads/1/3/4/4/134463531/2039240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5f923964ce431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369309/normal_5f89422466e02.pdfIn PDF document text
    • https://pexesalakodosok.weebly.com/uploads/1/3/4/6/134650812/xavez-dezukibebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_5fa25661053b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f9f682850b5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/34853091162.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/caritas_in_veritate_international.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/19477117581.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/prudential_retirement_login_in.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/luwomuzuremiwakax.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/zevafe.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_off0000c6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FC 4824 bytes
SHA-256: 37a8d55eb756a4ba5df855d58ded3e67221d002dfb222dc88927aeddc6c7ba0a
font_01_sfnt_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 11600 bytes
SHA-256: 1d6284e7c9fdd49512b3fe3d0a160884b6b1477344b52ff817288a7923195162
font_02_sfnt_off0000fe1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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