Malicious PDF — malware analysis report

Static analysis result for SHA-256 43429a0b1b356ad9…

MALICIOUS

PDF

36.9 KB Authoring application: Solid Converter PDF
MD5: 883cd184f5533d7a7bd5c66ab8822260 SHA-1: 0fd17752b269f1ec7694461ce83c78365e10a77f SHA-256: 43429a0b1b356ad91029112c81f9736e819fad6cb48340886ab904a70d7f4f6f
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. This indicates a link farm or redirection mechanism designed to distribute malicious content. The ClamAV detection further confirms its malicious nature. The embedded URLs are the primary indicators of compromise, likely serving as download locations for further stages of an attack.

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.Dropper.Agent-7954954-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7954954-0
  • 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://servicedapartmentbangkok.com/uploads/1/3/0/7/130739046/520ac522bd0873d.pdf
    • http://biortonutricion.com/uploads/1/3/0/5/130551795/kemiwugejok.pdf
    • http://hamiltoncitymobilehomepark.com/uploads/1/3/0/2/130289686/foraweto.pdf
    • http://sunnyvalecoffee.com/uploads/1/3/0/4/130435597/5781955.pdf
    • http://baldwinairconditioning.com/uploads/1/3/0/6/130604470/7612225.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/8/130814914/130814914.html#listening+practice+test+ielts+general

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001089.bin
d450bb9992dc1725b1ac2344fb5b0addde151b68672e79345fa11ea1367ea125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1089 7920 bytes

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