Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf4aad34882b137…

MALICIOUS

PDF

357.1 KB Created: 2015-08-28 11:37:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fa849ef7dc21c4d2fb195723a15283fd SHA-1: 2b55ae35aa21a42d0b5484da367356488b4d8f47 SHA-256: 1cf4aad34882b137586cf3eeb8c0809c64300b0a668aa0112ea20818c6ee49a1
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a gateway to a phishing or malware distribution page. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing further analysis of the specific lure.

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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%A1%D1%85%D0%B5%D0%BC%D0%B0+%D0%B1%D0%BB%D0%BE%D0%BA%D0%B0+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D1%85%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%B5%D0%B9+%D0%BE%D0%BF%D0%B5%D0%BB%D1%8C+%D0%B7%D0%B0%D1%84%D0%B8%D1%80%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802368_tank__t72__balkanuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802450_instrukciya__po__upravleniyu_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802406_prikaz__o__naznachenii_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054b1c.bin
c6b99e06d219c456d1ee370294048df3c05e206b3c64003c50d2063a03ef635e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B1C 8484 bytes
font_01_sfnt_off0005639e.bin
570bd2918f9c0a391e30167169edbd6acce2f0cf15183004a9dc5cc2eb1d6b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5639E 15956 bytes

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