Malicious PDF — malware analysis report

Static analysis result for SHA-256 349d6ec709cb9108…

MALICIOUS

PDF

71.5 KB Created: 2021-01-16 09:13:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 6e1e8b01b907b1565e37d1c3bde77f84 SHA-1: 98ee03e69f70af449d95577fdb856704a1cf7e38 SHA-256: 349d6ec709cb9108c74670e5549161ca3a0a26d169c08ce72469f81571e5e76a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=peter+pan+monologue+funny'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body strongly suggests an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=peter+pan+monologue+funny In PDF document text
    • https://static.s123-cdn-static.com/uploads/4391308/normal_5ff963cfdce36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_5fd63b46da316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_5fb2c7a356b28.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/VpYBJ2H/60988841239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fe5c40704b65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f964181945e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481424/normal_5ffa1a097efb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5fe0235ac9053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428069/normal_5fbac1c05a5bc.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/iigchd1/99931774285.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/5zhPjgH/kosajuburunasosebagodidav.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/jiwisi/93275456239.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/botanicula_apk_award.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/68181009768.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/carter_250cc_dune_buggy.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/nefugabixaduwexonez.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_off0000dc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 5148 bytes
SHA-256: fef7c772885141d1619cbc82dbe77ef93d9bd6f77df9ca240e2f212d332b1ffa
font_01_sfnt_off0000ed8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8A 10540 bytes
SHA-256: 12feedf576e1f112d57b252a5a56103ca8250b86039fb92721c4ff4fe0783e92

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