Malicious PDF — malware analysis report

Static analysis result for SHA-256 849092b786260425…

MALICIOUS

PDF

65.0 KB Created: 2020-11-10 09:15:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 492251a81a1dd618fa403d84bc4c826b SHA-1: 26a46e248568edf38e16873fe7a291d6b343b2d0 SHA-256: 849092b786260425d16df18f21051eaac952c836d3da85408521c2fd7dc2409d
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://trafftec.ru/aws?keyword=queensbury+central+fire', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Queensbury central fire'. No scripts were extracted, but the presence of an external URI strongly indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/aws?keyword=queensbury+central+fire PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368977/normal_5fa8707e32388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5f9396f3c1f4d.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/1e415e5e-3612-41fb-9361-24e1cfcf45e2/31944735055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38074457-0c65-44e2-84b1-d4c06a4a3e0d/faruk_k_azar_azar_mp3_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/pamipetebedodoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aaffe01-36fb-448d-927f-f1e5f6bcec76/82296635487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fb1304-3819-406e-aed6-9e2a72626a74/17830931857.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/80364467905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a22d79ee-0790-4069-911f-bbc12ebfa569/34678182921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1b8859-520d-426e-863e-3f6111f6a186/64426911064.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_off0000bf57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF57 5180 bytes
SHA-256: a1d3814dc3d6160cb6567b6377ac170d0713775b34e9d1fbe5734f761cbfc1b7
font_01_sfnt_off0000d10e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10E 11596 bytes
SHA-256: fb5d1178bc744ec3a3ebc6b4cde772d4c625ae95be79c6c88a0de88bcc5b3768