Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd9c4192e341819…

MALICIOUS

PDF

364.0 KB Created: 2015-08-28 11:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9ac1ba142630ccbff2ee58a0709c1381 SHA-1: e681dcdd23b7925a445e421a9cee267797c3d45e SHA-256: 0cd9c4192e341819c6a8fb668e3d0b4e4cdeda2cfddb85dc2135eb7a0b3e67cb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness. The presence of this URL suggests the document is designed to lure the user to a potentially harmful site, likely for phishing or to download further malware. No scripts were extracted, but the redirector itself is a primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D1%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D1%84%D1%83%D1%82%D0%B1%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D1%85+%D0%BC%D0%B0%D1%82%D1%87%D0%B5%D0%B9+%D0%BD%D0%B0+%D0%B7%D0%B0%D0%B2%D1%82%D1%80%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802371_shema__ultrazvukovogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802376_skachat__zhestokoe_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802363_detali__mashin__i_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056c09.bin
a2eef7c4ba178d0ad0d70633020f09b104f02273f1f51e1ac3ddfb04d52ab639		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C09 8468 bytes
font_01_sfnt_off0005848a.bin
850b4ef959e7f9114b967cdff3dafc237e039edd03a85f1b6b10db3c131737a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5848A 13876 bytes

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