Malicious PDF — malware analysis report

Static analysis result for SHA-256 38522a04ef15dbd4…

MALICIOUS

PDF

44.4 KB Created: 2020-12-09 00:53:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9ce20dfaa97254fe23b25aee7ddad770 SHA-1: b34e5dfadbcb3c17fa3f7986c99df0b2344adfbe SHA-256: 38522a04ef15dbd465c74fb98f53a8f5bd1615aa4a44329116acd747f0b5747b
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with at least one identified as a known malicious redirector. The heuristic firings indicate the document is designed to lead users to potentially harmful sites. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing or trojan-related PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6253

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=night+mother+pdf In PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/62ef76e1176b55d.pdfIn PDF document text
    • https://dujezipiver.weebly.com/uploads/1/3/4/6/134610991/6482502.pdfIn PDF document text
    • https://guboriratuji.weebly.com/uploads/1/3/4/2/134235556/xigaxota-nisanejajaj-tevofaneka-gabepebuli.pdfIn PDF document text
    • https://rurikuzusobow.weebly.com/uploads/1/3/4/8/134879219/lepasiweje.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/2972849.pdfIn PDF document text
    • https://zuwuwuxi.weebly.com/uploads/1/3/4/8/134883554/8e444e966.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf681c3c6ccf69f356b0f4/1606379551656/7708717062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf9fa34-c4c7-45ad-8e2d-3489711b9248/batenemesuw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2cb63bf71053ccb1c5e2b/t/5fcd92e4cded405bb8f24c4f/1607308005287/classic_helicopter_corp_auburn.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2c53660d3b5ffdb59922/1606233172800/90639427568.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/nejor.pdfIn PDF document text

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