Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d44649fa003becb…

MALICIOUS

PDF

359.8 KB Created: 2015-08-29 03:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9bb578045f7d13753c2e3e553394a481 SHA-1: faddd82b89cd1e251042bf0791f2ab72e1162020 SHA-256: 0d44649fa003becb81dd82d75474f22d33d7e3d1622844c1836ba8ee19fea95c
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. The primary attack vector appears to be luring the user to the malicious domain, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B+%D0%B4%D0%BB%D1%8F+discuz&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819088_gotovuye__servera__maynkraft_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4820/4820173_scott__joplin__the_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4819/4819046_skachat__mr3__albomuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000554cc.bin
ec9d64b61f23cc6e6463bcf795edc006ef76b4ce96207258e8ef794f0507f1c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554CC 9484 bytes
font_01_sfnt_off00056f0f.bin
c22178c0598a28349e789f55b5f7a6af90424d916f6f12cb331f2d3b69d91654		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F0F 16016 bytes

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