Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc91522c7635057…

MALICIOUS

PDF

186.4 KB Created: 2015-08-08 13:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: aadbd19c59de0f9c8dc018fdca9778f2 SHA-1: 85db5a51d9d0b3f27fa1721e7f382e66067e52b9 SHA-256: 9bc91522c7635057eed8a1a68080607c08ee1d0c7894c081267f46bf1cda5ba1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

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 lure to a phishing or malware distribution site. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+%D0%B7%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B2+%D1%82%D0%B0%D0%BD%D0%BA%D0%B0%D1%85+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387202_skachat_besplatno_muzuyku_russkiy_rok.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391825_skachat_crack_dlya_gta_4_episodes_from_liberty_city.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389008_notuy_dlya_fortepiano_masha_i_medved_masha_igraet_na_pianino.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024680.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24680 3556 bytes
font_01_sfnt_off00025403.bin
31519ef704721bd8687aa64adae0ce30bf3c33fccfb381a6b8c4f7475309d030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25403 15028 bytes
font_02_sfnt_off00028274.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28274 14532 bytes
font_03_sfnt_off0002ad64.bin
8d40e0d7b3d31e4f510b3f3fea87fdea536a55055beda9891895ce42133f041d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD64 6512 bytes
font_04_sfnt_off0002bfeb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFEB 6084 bytes
font_05_sfnt_off0002cf80.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF80 3752 bytes

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