Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34fde73118b69f6…

MALICIOUS

PDF

76.5 KB Created: 2021-01-03 14:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 3c2d95ff155286a7de64ca56ec7e9ab4 SHA-1: 2bd63634417e57719f05778c63e785b5872b72a4 SHA-256: a34fde73118b69f6021a1cb535af25ba507c93f8b6627ff116652647f391e21c
156 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically requesting recovery secrets or private keys. The embedded URL, 'https://traffset.ru/aws?utm_term=crack+program+for+android', suggests a lure related to cracking software. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://traffset.ru/aws?utm_term=crack+program+for+android PDF link annotation
    • https://cdn.sqhk.co/jifonakilux/igFhfdJ/rupadorujifixaxuso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413563/normal_5fa1f0dfe8a05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368250/normal_5fcebde5ce8b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5fe8c578cf415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421051/normal_5fb821f7d48cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368954/normal_5fe54d943a30d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415524/normal_5faf43d92cc74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fa6d1af09fc0.pdfIn PDF document text
    • https://cdn.sqhk.co/dufukeraj/0g7xUNY/86828685709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387709/normal_5fd201064086b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475741/normal_5fe84ba32e80c.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/pirofopafu/84463251998.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/report_gunshots_dallas.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/mailing_labels_template_polaroid.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_off0000e0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B8 5236 bytes
SHA-256: 8bc2a3b5bbd2f8ee6386440c3fdf196c13654e01f629a5a2ac73a89fc1bcd5ed
font_01_sfnt_off0000f26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26D 2236 bytes
SHA-256: 6a77f955d39b9d81e75477a2b3a68a06f90d7b352a411c8fd057aba46c531b2e
font_02_sfnt_off0000fc84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC84 11872 bytes
SHA-256: da4d36f882c3a6fa162fe7dc4ff72c622380db3440c88c45853a6342d88fbecb

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