Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e76eff6bd40dcf…

MALICIOUS

PDF

37.9 KB Authoring application: Soda PDF
MD5: ef4e6b7deac34cf322773373d331cd51 SHA-1: d2d8e031bc6fa943798954e161a254ba2f531d87 SHA-256: 97e76eff6bd40dcf0dc7473e2e1668e75c49d8956c2c943005a9e4fb2e9b0aac
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, masquerading as a resource for free Photoshop brushes. This technique is commonly used for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ashlandkitchenevents.com/uploads/1/3/0/2/130271016/wamozujebowed-gofoz.pdf
    • http://societeimperiale.com/uploads/1/3/0/6/130639855/9172411.pdf
    • http://nchep2017.org/uploads/1/3/0/3/130323355/dibig.pdf
    • http://nusodizoge.sochi-ses.ru/uploads/2020/01/28/8953948.pdf
    • http://jaylance.net/uploads/1/3/0/5/130589998/leruwojatofarug.pdf
    • http://nps-music.com/uploads/1/3/0/2/130272284/2089148.pdf
    • http://bgflowermart.com/uploads/1/3/0/5/130589391/jateta.pdf
    • http://mrshoganschoolcounselor.com/uploads/1/3/0/5/130590261/9526616.pdf
    • http://lefivojo.aerostand.ru/uploads/2020/01/28/seradafedag.pdf
    • http://anarogersfitness.com/uploads/1/3/0/6/130604326/e025a36e6c609.pdf
    • http://mysoundcollective.com/uploads/1/3/0/4/130436315/130436315.html#photoshop+smoke+effect+brushes+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123d.bin
fb7cdbaa2b36bf5e936fedbfc0172b639465113b4f8bfd9cd8f643ead8660cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123D 8268 bytes

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