Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5c14dd4592cf2a…

MALICIOUS

PDF

374.3 KB Created: 2015-08-29 01:36:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ecd166e8fbd290778fbdba5f241caf30 SHA-1: 2d1f0fad63fe652e7f149ad68609011ea955b4d4 SHA-256: 3d5c14dd4592cf2a0f8cad10f84f17a46439ef31caf6e9260bf670d1a8082b83
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=instagram+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D1%8F+windows+phone&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818361_tablica__moschnosti__i_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817768_kontrolnaya__rabota__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817516_kukruyniksuy__vsadniki__sveta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058ac8.bin
64b6b277acc329d6367be33966f63d7ee87a9a80c7dc98f8e54dab2eed25638c
pdf-font-stream PDF embedded font (sfnt) at offset 0x58AC8 10700 bytes
font_01_sfnt_off0005a870.bin
ab91751fe5a0a724a5ab559ed76b1f2d937cc40c354bc2ad285f16255af5304f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A870 16272 bytes