Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcee40e3fba68825…

MALICIOUS

PDF

38.0 KB Authoring application: Serif PagePlus
MD5: f3e6cbf24f5fbd18337a32a72a9e4776 SHA-1: a48cb0678afb8479c55c7fdfd7b71bdc7a162276 SHA-256: fcee40e3fba6882534b6ddcd3f02e5e0c5c28de7b8fcacc778e86092ab9b81ee
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also strongly suggest malicious intent. The embedded URLs likely serve as a redirection mechanism to phishing or malware distribution sites. No scripts were extracted from this sample.

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://stevenyasell.com/uploads/1/3/0/5/130540661/desikupepaza-pimemum-xasamogomatilap-vibax.pdf
    • http://nelslehtinen.com/uploads/1/3/0/5/130588735/ralivivudetaxigisuf.pdf
    • http://michaelsilveyiptec.com/uploads/1/3/0/4/130488153/e0a73e.pdf
    • http://splashlondon.ca/uploads/1/3/0/4/130483682/vefinezamumu.pdf
    • http://musicresources.church/uploads/1/3/0/5/130588913/kodera-pewobebugiguk.pdf
    • http://drpatty.net/uploads/1/3/0/4/130477131/130477131.html#minecraft+pe+%C3%BCcretsiz+indir+oyun+cep

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000130c.bin
74c479c59ea6e18ec4e58d5d8eade7bd0922a5f829edf7db8220cd2502d21087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130C 10140 bytes

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