Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5d6c3f774dbc8d…

MALICIOUS

PDF

186.5 KB Created: 2015-08-05 18:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f357b565e83fa1881f5fd349dced0fc8 SHA-1: 754354c8c3646e6c3a5e924a332f924e9343ea8b SHA-256: ff5d6c3f774dbc8d9e84c435a4d539bf3da491d527dc1c3edeea10b04ec2ee22
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. The ML classifier also assigned a high probability of 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 site. No scripts were extracted, and the document body was not sufficiently readable to provide further context.

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%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D0%B2%D0%B8%D0%BA%D1%82%D0%BE%D1%80%D0%B8%D0%B8+%D0%B1%D0%B5%D0%BA%D1%85%D1%8D%D0%BC+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304909_mod_na_ves_dlya_stalker_ten_chernobuylya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305192_konfiguraciya_1s_82_torgovlya_i_sklad_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305366_dogovor_vuypolnennuyh_rabot_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002460f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2460F 3556 bytes
font_01_sfnt_off00025392.bin
0f583cb3ca88bfb03a43f71ebaf5bcdad5221aa3cc3e4522260eba1b230e0b95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25392 14564 bytes
font_02_sfnt_off0002813b.bin
c38237829c2ddca9ad3a95e528f8db6807ef28ab91190e9fbea158c39247735a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2813B 14532 bytes
font_03_sfnt_off0002ac2b.bin
8976b4df2a453c5cf25b5822070efe2c5ddc397326b0a2516e4e129b98503f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC2B 6988 bytes
font_04_sfnt_off0002c063.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C063 6084 bytes
font_05_sfnt_off0002cff8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFF8 3752 bytes

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