Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3d4b8d113612a3…

MALICIOUS

PDF

30.7 KB Authoring application: Inkscape
MD5: 4495e016015b9ef8a169268cb0c7af88 SHA-1: b69be6acc4ed6c53e63c17baf3795e257df89197 SHA-256: 1c3d4b8d113612a345d815cbaeee28dc68c1ce64b4bfb4300419269fdd99c1b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links to external PDF files, a common tactic for phishing or distributing malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious download intent. The document body, while containing garbled text, includes references to a specific bearing model ('Skf 61802-2rs1 bearing') and lists several URLs, suggesting a lure to entice users to click on these links for more information, likely leading to malicious content.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://shortpowfilm.com/uploads/1/3/0/5/130590702/viweluram.pdf
    • http://undernolaws.com/uploads/1/3/0/2/130287242/d556b892c1.pdf
    • http://fribergfysikalske.com/uploads/1/3/0/6/130620427/8609409.pdf
    • http://djdbaker.com/uploads/1/3/0/6/130620282/tazizijevadapis-zofufov.pdf
    • http://nnnefedov-blog.fun/uploads/2020/01/28/86861.pdf
    • http://multistreams.com/uploads/1/3/0/3/130313015/130313015.html#skf+61802-2rs1+bearing

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105c.bin
91d22fa6d18033651653ffefd121a63bc776c7a271e352efd20a8ddf512796d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C 8728 bytes

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