Malicious PDF — malware analysis report

Static analysis result for SHA-256 8067efa64eb7e8f4…

MALICIOUS

PDF

343.6 KB Created: 2015-08-28 11:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4463ce4987820c8e7cfd99a9df0eb6b3 SHA-1: 9ce38b52ee0717e34479ed24911c88f632a8d089 SHA-256: 8067efa64eb7e8f4925df25ba1a15be063c3f7591963145aacb69bea578fdb30
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged as malicious due to an embedded link pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious redirector suggests an attempt to lure the user to a compromised site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+gta+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D0%B8%D0%BF%D0%BB%D0%B5%D0%B5%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802365_funbox__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802362_imperiya__angelov__bernard_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005141d.bin
57063ae3f60f008f21352bf34f3df4abb3a15e8729de7026d8548ecffd320b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5141D 8472 bytes
font_01_sfnt_off00052bd1.bin
a8f5e6f7721679f0bb6f81164eae9538d6e2b9588259f2fdcdd37576bf6f4370		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52BD1 16748 bytes

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