Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0a0f22eb0809b8…

MALICIOUS

PDF

284.3 KB Created: 2015-08-19 13:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-12
MD5: e6456fd41cc76b0353e23b8c8162f23b SHA-1: fe9ab68d083dfab2ea3962984d2e4593341a8cc9 SHA-256: bc0a0f22eb0809b821e03e3cbb03769967b1574566e369fc53e6616b6b587301
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the ML classifier also flagged the document as malicious. The document body is heavily obfuscated and unreadable, but the presence of the malicious URL is sufficient to assess the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7019

Heuristics 3

  • 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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=Selka+qizlar+uz&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626602_powersuite_2015_kod_aktivacii_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626525_siberian_mouse_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626519_skachat_golosyaschiy_kivin_2015_cherez_torrent.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000425ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x425CE 8812 bytes
SHA-256: 6aad8135ef2e474b0b4af546f4c3a0a4bcd0317dd8ff7dcf8ea8d01b8c0d278a
font_01_sfnt_off00043eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43EB5 16868 bytes
SHA-256: 88a392e22da1a9ac71d9ffe166200c66dfb54910a44e83154f9bc578545533e9

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