Malicious PDF — malware analysis report

Static analysis result for SHA-256 2623b4aaa5f46b22…

MALICIOUS

PDF

50.4 KB Authoring application: PDF Studio
MD5: 838a4e31022834dc4cf069165539f7aa SHA-1: d0bea6e3a20cf6e56e3d13ddc921d4525f3c4c25 SHA-256: 2623b4aaa5f46b227c9fc5d8af9eac291be69b0dcebc1d1b0ceddd84c9355bcf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a common technique for SEO poisoning and phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. The document body, while containing text related to 'Piriformis syndrome pain', appears to be a lure to direct users to the linked malicious domains. No scripts were extracted, and the primary malicious activity observed is the distribution of links to potentially harmful websites.

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://toniabasihill.com/uploads/1/3/0/3/130379316/9896733.pdf
    • http://myukpensiontransfer.com.au/uploads/1/3/0/4/130435673/lijibitisepe.pdf
    • http://tomwenfashiondesign.com/uploads/1/3/0/6/130621369/66434a2abfc94de.pdf
    • http://mysticalrockny.com/uploads/1/3/0/6/130604688/7525624.pdf
    • http://blockchainambassador.ca/uploads/1/3/0/6/130605406/130605406.html#piriformis+syndrome+pain+when+lying+down

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001276.bin
17c42ab8ffdab9418f84473e92b1e9c645f0a6aacdd8c8cb9ab743d37c48f8e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1276 7972 bytes

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