Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a58b6db1ac67ea…

MALICIOUS

PDF

132.0 KB Created: 2021-03-22 22:05:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 67d917d8d5c5efd1f60eb5bcc22cf0c1 SHA-1: ceddf6d9473a54d7ac2abac79325c4a641a8a6fd SHA-256: a6a58b6db1ac67ea250854cfdd3c6dd3069bc3160430e15be3c4e1a2ac725588
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, references 'Marshall mcluhan quotes on media' to disguise its malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://mezovuduw.ru/strik?utm_term=marshall+mcluhan+quotes+on+media PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5ff3c8482db97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_5fe6b4b30124a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_604d886575475.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414334/normal_5ffa96e95f0af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388424/normal_604b1f6a071f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369150/normal_5fc626b674a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_6032553944fa3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407299/normal_6000bc2ec80aa.pdfIn PDF document text
    • http://com-connexion.xyz/69691956168s0a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408879/normal_6050ba6111878.pdfIn PDF document text
    • https://cdn.sqhk.co/sejiragidu/f2hkEhj/sedujowonidux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489402/normal_5fda20fc42d75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408323/normal_603f000949b0d.pdfIn PDF document text
    • https://cdn.sqhk.co/redodadix/m2I3Pn4/certificate_templates_ppt_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379601/normal_60290d7995cb0.pdfIn PDF document text
    • http://indonesia2health.online/964125982241ghui.pdfIn PDF document text
    • https://cdn.sqhk.co/sefibenip/nBZjejb/mopererimorolibak.pdfIn PDF document text
    • https://cdn.sqhk.co/genazeres/jjhe3pA/netofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500677/normal_60384c00bf447.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/kowasakaraxifibagofatabot.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/xiwemerenufofimanoto.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C84D 5308 bytes
SHA-256: 7c6fd8eabb9393a78d2af1b92dba0e566a5dd62e7c9d3fb7c90d08a2fd9c1950
font_01_sfnt_off0001da36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA36 11872 bytes
SHA-256: d61b7cf2f38d7c51f7329cd01ad1bb48e2b5dcfe2764ca6bf41b62c805a6aab4

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