Malicious PDF — malware analysis report

Static analysis result for SHA-256 996f31bc3007e549…

MALICIOUS

PDF

143.5 KB Created: 2015-08-25 15:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 052ff3044fd93eb555c6bbbf8aea8912 SHA-1: 497b349238a158c3672577c628624e123bf5f460 SHA-256: 996f31bc3007e549ee63e81c246367139402a8a5372fd7ca7479dc2a776e3405
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it's a malicious redirector link. The embedded URL points to 'botcraftman.ru', which is flagged as malicious. No scripts were extracted, but the PDF structure and the malicious URL strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1719

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=8+++136&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4732/4732326_tablica__analogov__lekarstvennuyh_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731811_yemblemuy__klan_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731385_multimedia__audiokontroller__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fae5.bin
861c09f061ce4b287dcc4c00dc0075ac4a7570593bc3e76dc24996bf2502b7cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FAE5 9084 bytes
font_01_sfnt_off00021497.bin
f35d39c4912424518eca889197ba2d1cb5e5d9b1ccfc9e18e9e75eb417e9c47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21497 13372 bytes

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