Malicious PDF — malware analysis report

Static analysis result for SHA-256 5810314dd9841fbf…

MALICIOUS

PDF

356.5 KB Created: 2015-08-29 01:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 236702ce76adfdb743435f8945177fff SHA-1: 06b991d291b692c3af9e0fef3f32d7b935ca1dc1 SHA-256: 5810314dd9841fbf63a1e4714d72437621ebab72d13399e9eb8681e9eeaa009c
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D1%80%D0%BE%D1%88%D0%B8%D0%B2%D0%BA%D0%B0+samsung+ml-2165&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817673_skachat__snayper__yelit_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817685_skachat__dx11__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817931_hp__1315__drayver_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054744.bin
d87489d6ee79002dc422ad66eb7c0bbed4de6594d7608c14b31a4bb05975eafc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54744 10412 bytes
font_01_sfnt_off0005645a.bin
a91544680777d62f8bb9bfcc370481cf2e705b46b9e4d33dcfb02dfa2203dfb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5645A 15488 bytes

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