Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e2fed4062d4bf3…

MALICIOUS

PDF

184.3 KB Created: 2015-08-08 10:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: aa61962b80850c39a5a8265a1ae17289 SHA-1: aec2a7d3fc8961c37797682705ac03d3dbfa1602 SHA-256: b7e2fed4062d4bf3ab0dbc170be8941ece7ec4f2ab873d7388b86971ab3a2826
90 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 for phishing or malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D0%B7%D0%B2%D1%83%D0%BA%D0%B8+%D0%BF%D1%80%D0%B8%D1%80%D0%BE%D0%B4%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384727_kos_po_ohrane_truda_spo.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384684_skachat_kodeks_warhammer_40000.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384476_notuy_dlya_sintezatora_hatiko.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e45.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E45 3556 bytes
font_01_sfnt_off00024bc8.bin
de986fca6ef254867912d630886366cee499b649ac29c535694ff523f08ddaf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BC8 14856 bytes
font_02_sfnt_off000279b2.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279B2 14468 bytes
font_03_sfnt_off0002a465.bin
7b9affb584811a79a7186002ff02b27e704f769685e4f3222a9c80da6d2dd86f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A465 6604 bytes
font_04_sfnt_off0002b74a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B74A 6084 bytes
font_05_sfnt_off0002c6df.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6DF 3752 bytes

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