Malicious PDF — malware analysis report

Static analysis result for SHA-256 815e286fbb4a0d36…

MALICIOUS

PDF

367.3 KB Created: 2015-08-26 10:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fbb52394c7df999c1a5e0dc255f09378 SHA-1: 62674b795326bdc509b043a70d6a258088f13345 SHA-256: 815e286fbb4a0d36c21c280e37fdae3788aa832b4ac267072438b75bf94dd9bd
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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=catia+v5+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D1%83%D1%80%D0%BE%D0%BA%D0%B8+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752422_motionjoy__dualshock__3_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752082_android_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752101_kerio__control__72_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056e9b.bin
2d602091d26f5c5145a56e398bb5e34f63212598baafbb13a4dae54359c4d8b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E9B 9652 bytes
font_01_sfnt_off00058a1c.bin
b0f62616a5e2ea3c6e1a5a6c564bad26ee61b699e3b1a099059dbf8e30832537		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A1C 17356 bytes

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