Malicious PDF — malware analysis report

Static analysis result for SHA-256 10f7d6f2c620a34d…

MALICIOUS

PDF

390.8 KB Created: 2015-08-21 09:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a70071cb7e085d47782831180bb4517e SHA-1: 95b7c6576621decb5627929ec87d74cffc8b6cce SHA-256: 10f7d6f2c620a34d3d4b6632020b3b04013b8380ef814171dbb8111b32bc08ee
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download and execute a secondary payload. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8810526-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8810526-0
  • 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=Scania+truck+driving+simulator+%D0%BA%D0%BE%D0%B4+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654703_skachat_drayver_printera_canon_lbp_2900.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654763_dumper_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654821_english_in_mind_workbook_2_otvetuy.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005cf8d.bin
0e4f7475d6899a6097c7a42acfafd986d1ca65dc9d73f11d2849dd9f5873308d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF8D 10260 bytes
font_01_sfnt_off0005ec00.bin
72268eb394af7570154d232bc8bd4baff74d6a0a4bf45f63bd88b0a21f0dce05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC00 15708 bytes

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