Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2427890c299a36…

MALICIOUS

PDF

38.5 KB Authoring application: Soda PDF
MD5: 97a615f72aad2a234257a68aad000b86 SHA-1: 6eb43b11bb1b57502e7c2161c94038289912db75 SHA-256: bd2427890c299a36fe6e383b80bb2ba6622459b58c8dead83277e0690dd0b914
150 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, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV also strongly indicate maliciousness. No scripts were extracted from this sample, but the primary attack pattern appears to be directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://somersetfoodtrail.org/uploads/1/3/0/6/130604509/fuzixis.pdf
    • http://lilyseidel.com/uploads/1/3/0/2/130287257/2204448.pdf
    • http://gebivexip.dexterius.com/uploads/2020/01/28/b1895b3b1.pdf
    • http://thepro3001.com/uploads/1/3/0/2/130289723/d96ae8e4a.pdf
    • http://lrsdraft.com/uploads/1/3/0/6/130622116/5544012.pdf
    • http://reneedumarr.com/uploads/1/3/0/6/130639608/827e8.pdf
    • http://upanaloriri.com/uploads/1/3/0/5/130588248/3595391.pdf
    • http://ts3update.info/uploads/2020/01/28/zaxinazaleb.pdf
    • http://thehnossaproject.com/uploads/1/3/0/5/130542859/130542859.html#accord+je+te+promet

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010d8.bin
047efa2c32c51b88e0cb3941bbbbf90707e35e7a43b2fd8f3f853cd1591b9282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8 8372 bytes
font_01_sfnt_off000045bb.bin
3d87d2b7c13dd2417f12a317cee1c413f31009af4a8fc25850d6a61dbad54251		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45BB 16108 bytes

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