Malicious PDF — malware analysis report

Static analysis result for SHA-256 82101b0e5f7e22ed…

MALICIOUS

PDF

375.5 KB Created: 2015-08-26 20:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d7976e6415fd84d785b0020e9a278e3f SHA-1: 61d576355ee1d2843cb881a1dcbd2957411b8046 SHA-256: 82101b0e5f7e22edb23b7ad53752f596fb7d992dbcb169e6d7f8824e01da9850
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. This suggests the document's primary purpose is to lure the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%B6%D1%83%D1%80%D0%BD%D0%B0%D0%BB+%D0%BA%D1%80%D1%8B%D0%BB%D1%8C%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762948_egye__po__literature_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763310_vaz__21114__remont_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762472_website__x5__professional_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005934b.bin
4415b59d6d33e8dd998d17be3a88d13aba7312ea21c203bc535f9cbc726402e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5934B 9096 bytes
font_01_sfnt_off0005acb8.bin
9f9e1f54667a85d03f3a691f3e7e42c45443c3f6597477932846e293394b6d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACB8 16488 bytes

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