Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77fa0817f289129…

MALICIOUS

PDF

182.3 KB Created: 2015-08-05 13:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eae4d61839170169d173935cacf10d0c SHA-1: 01c064d919edbe5f2afcf4037278f4bf56746edb SHA-256: b77fa0817f289129df0f5ad497952076a944454fd0f4bfd77c1bc7b3e65f3595
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/?lip&keyword=Acpi+pnpb006+windows+7&charset=utf-8 is the primary indicator of compromise, suggesting a phishing or malware delivery attempt.

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=Acpi+pnpb006+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304676_podstavit_lico_v_foto.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304719_shema_predohraniteley_lifan_briz.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304813_skachat_kartinki_devushki_so_spinuy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029d49.bin
83fe2307588fec60ec095c850fc2feaa09c5980a939f90f99eaba7cccae7ab2e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29D49 6368 bytes
font_00_sfnt_off00023773.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23773 3556 bytes
font_01_sfnt_off000244f6.bin
4c1704e1b0e78b3222fd7b9259fe705bc7ec3ef1c80550356b5b633d870e325a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244F6 14200 bytes
font_02_sfnt_off000271c9.bin
d9a5013384a73ba66ed3a25740693504e216643039c1fc2666ee4e02159eb4f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x271C9 14716 bytes
font_04_sfnt_off0002af41.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF41 6084 bytes
font_05_sfnt_off0002bed6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BED6 3752 bytes

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