Malicious PDF — malware analysis report

Static analysis result for SHA-256 95087b861ae856e5…

MALICIOUS

PDF

354.0 KB Created: 2015-08-28 11:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b2437d9b4ff98f16c28f5ef67ede5d99 SHA-1: 42e15c80c12940296aa0a5e21ec098796a7acca6 SHA-256: 95087b861ae856e53b2f230d77bb430e1cff765c78f92bac8371de1b703d59da
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector at http://botcraftman.ru/. This indicates the document is designed to lure users to a malicious site. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9889

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=quickbinder++samp+03z&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802397_podgotovka__k__egye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802382_russkaya__vyaz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802412_vladimir__rackin_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053cbd.bin
ffd55f64be7b7fbde640ee635532c89661847fa4c44e7da50135a302b9201686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CBD 10172 bytes
font_01_sfnt_off00055901.bin
7934c2d46c1e2fbeeda561d41a1245a401b51b44dc25bd61371725994bb8075d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55901 15620 bytes

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