Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2ffa2727953312…

MALICIOUS

PDF

371.3 KB Created: 2015-08-25 22:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f36e6455ce6ff31df5cd963fc37fedd6 SHA-1: 876eb7dc8192f7178d790c8803e444fb5cfbefc1 SHA-256: 7a2ffa272795331206a47877cdb26d459d2384f9930cb3197ac8dea2bf808d48
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL suggests an attempt to lure the user to a compromised site for further exploitation or phishing. The document body was heavily obfuscated and truncated, preventing a more detailed analysis of its specific content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%A2%D0%B5%D1%81%D1%82%D1%8B+%D0%BF%D0%BE+%D0%BF%D0%B4%D0%B4+2014+%D0%B1%D0%B5%D0%BB%D0%B0%D1%80%D1%83%D1%81%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740708_plug__dlya__kultivatora_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740727_akt__proverki__yeffektivnosti_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740686_activatenavitelru__licenzionnuyy__klyuch_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005847f.bin
b900900e1729e8496b30d4a9294eaaa67c54bf30895f5f3558cf2f51350dbd71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5847F 8900 bytes
font_01_sfnt_off00059daf.bin
3d4d70dba6c484c819fcdcb8bf04dd6f77b48d2eca1c46a5e66d0889ffb14750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DAF 15504 bytes

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