Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67a8fd363007278…

MALICIOUS

PDF

356.8 KB Created: 2015-08-11 22:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 258bfbafa06c73d9f4bb4972ceb0cc97 SHA-1: bf8300a10cf2fe01c901f2550e35782318af543e SHA-256: d67a8fd36300727813139b701ce73771b22ec11902e9d48b50d2721bd9c1e3a7
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and the malicious URL are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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+%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B5+%D0%B8%D0%BD%D1%82%D1%80%D0%BE+%D0%B4%D0%BB%D1%8F+sony+vegas+pro+12&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4439/4439539_chituy_na_prohozhdenie_kvestov_v_skayrime.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4453/4453311_bifidum_bag_kupit_v_rostove.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4421/4421250_bot_dlya_ruybalki_high_five.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054dba.bin
de9b9267337beee0386de0bca10ce8b1a8d10eddb2f3d2db1ee48c2dc31b52f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DBA 8608 bytes
font_01_sfnt_off000565bd.bin
d0b4762c5ea1028fd1dd8402947211c79577271182e275f7caa9662f350bc27f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565BD 15348 bytes

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