Malicious PDF — malware analysis report

Static analysis result for SHA-256 81da9a8e122c8828…

MALICIOUS

PDF

356.1 KB Created: 2015-08-29 04:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6976f1712fc5f07271822a62b1505aca SHA-1: 6c6db71cda1295f34023821bb6ac43c5cce1a02b SHA-256: 81da9a8e122c882821f523351280964ed6391063cbe41d2d20d094e01580d0e1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely part of a phishing or malware distribution chain. Although no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest it is designed to lure users to a harmful destination.

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%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%B3%D0%B5%D0%BD%D0%B5%D1%80%D0%B0%D0%BB%D1%8B+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%B0+007&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4821/4821500_korol__i__shut_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4821/4821880_grafik__ucheta__rabochego_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819708_raspisanie__yelektrichek__sasovskogo_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054cb6.bin
429c6accc76e70f0e1b91c4ee6dc2f8a3e770ecdb7155790cc21180d40e4185c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54CB6 7752 bytes
font_01_sfnt_off00056349.bin
abc414c17f84db09e4091fb115623519b349ca39cab2c47d10c29de9bb280266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56349 14280 bytes

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