Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b39f37c89c0aef…

MALICIOUS

PDF

363.4 KB Created: 2015-08-29 11:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-09-23
MD5: 64374664a9fc7ebccb677b585505c04e SHA-1: 516406c566253f0d2c68d1e4e950384e067d6cb5 SHA-256: 42b39f37c89c0aef591c19fb2667ca3f2213f62033fad440f36f8ebdd46fc83a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 2

  • 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.
  • 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 http://botcraftman.ru/?lip&keyword=%D0%BF%D1%80%D0%B8%D0%BA%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%B4%D0%BB%D1%8F+%D0%B2%D1%8B%D0%BA%D1%83%D0%BF%D0%B0+%D0%BD%D0%B5%D0%B2%D0%B5%D1%81%D1%82%D1%8B&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830480_skachat__knigi__stalker_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830449_raspisanie__avtobusov__yarcevomoskva_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830349_naydite__dzheymsa__kidda_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C53 8032 bytes
SHA-256: f3a1732e82a6294f0a07be5dab06cc7d92d199c565c498b75a4302ee5a67c090
font_01_sfnt_off00058328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58328 13408 bytes
SHA-256: f0260cbef3f0afb7e93018ca658ffa2f7620689b471fddc73cea610398cf9dfd

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