Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10163c646ec8a5e…

MALICIOUS

PDF

382.0 KB Created: 2015-08-25 22:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dd45dfc99e31e9ea4268dde9d6331b6c SHA-1: 955c2b8449156dc21631d465ca7ed253d0b854ab SHA-256: e10163c646ec8a5e0989f2f38267705227d54749fecf682ff97f877bc2452ea6
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a compromised site. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%B2+%D0%BA%D1%80%D1%83%D0%B3%D0%B5+%D0%B2%D1%80%D0%B5%D0%BC%D0%B5%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740546_v__trave__sidel_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740558_rabochaya__programma__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740573_otkruytuyy__bank__zadaniy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b32b.bin
02b1a6e2c1c28169462dc0a8fe4b1e0863d73bdb688bf586b6c66271b2aee420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B32B 8128 bytes
font_01_sfnt_off0005cb08.bin
74bde07925606ba639af51a804ad35e718936aaba4338a8792c01eb24b323f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB08 14252 bytes

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