Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d808949b3592ba…

MALICIOUS

PDF

354.8 KB Created: 2015-08-28 17:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b09f41f0219178aa5517dff8f2f9b1a8 SHA-1: 61589beec8d4eb14382763a9b2cbb0c3e574f3c0 SHA-256: 68d808949b3592bac1d51e390e469a53582c04219002ff95569694d4917d9407
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'audio drivers' and 'download', suggesting a lure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be a malicious link embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=via+high+definition+audio+drivers+60110500+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4807/4807370_chituy__na__varfeys_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4808/4808975_notuy__dlya__fortepiano_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4808/4808108_skachat__konturnuye__kartuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054282.bin
ba5bfd32d169da0301039869550f9268c12b1a031c0380b3154634e40de9b3d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54282 9464 bytes
font_01_sfnt_off00055d76.bin
e32e19b327d2d56aaca8515fa5e456aa25a15f2ea1eeb0ffc3b8cea77527b547		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D76 14544 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.