Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43d3411c879817b…

MALICIOUS

PDF

349.2 KB Created: 2015-08-29 01:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d89c5c6c005e8ae160d4db86741e4af1 SHA-1: 96f3c02b042cea20be71d72493d2361d484afa7d SHA-256: a43d3411c879817b1fff844ead018719e025be0b37f295f7f1fcf91529a5a986
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 containing a link to a 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 lure to a phishing or malware download page. No scripts were extracted, and the document body was truncated, limiting 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D1%80%D0%B5%D0%BF&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817460_nevervhudo_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817732_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818375_skachat__vin__7_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053762.bin
464f0d6b392d962141ede6c2b25cf4a75b4218f5911cff17fd9d60b45fec0e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53762 7488 bytes
font_01_sfnt_off00054cdf.bin
e2656dbe4946d66bd02ca5c46cc5d7a026ad592b8e98214eb6262a56c0614c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54CDF 12628 bytes

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