Malicious PDF — malware analysis report

Static analysis result for SHA-256 013bb4f85f7ecc08…

MALICIOUS

PDF

35.8 KB Authoring application: Serif PagePlus
MD5: 1f921b983b0a2fafee3ecab3633cfb32 SHA-1: 51b30b0c69549ebb0ec7491372569d46d632aebd SHA-256: 013bb4f85f7ecc087eb856e643fdcd91b0eb37da18651fd7bdf1a8f7d00c1329
152 Risk Score

Malware Insights

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

The PDF was identified as malicious by ML classification and ClamAV, specifically flagged as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a tactic to distribute malicious content or manipulate search engine results. The embedded URLs are likely used to host or redirect to further malicious payloads.

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://naileditnorthshore.com/uploads/1/3/0/7/130739061/950544.pdf
    • http://alyssaperryinteriors.com/uploads/1/3/0/5/130588225/7259560.pdf
    • http://projectgrowca.com/uploads/1/3/0/5/130588467/15248.pdf
    • http://wnctreeculture.com/uploads/1/3/0/5/130550729/mapekomopixusajap.pdf
    • http://diversifyai.com/uploads/1/3/0/4/130476317/renejumawokako.pdf
    • http://goodnightvodka.com/uploads/1/3/0/8/130814421/5621340.pdf
    • http://colddiamnd.com/uploads/1/3/0/6/130621200/130621200.html#distinguish+between+merger+acquisition+and+takeover

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b4.bin
f0c1c2be0142769806e3bba0f7077f6dae61978d2fd32189f28504ba09c00c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4 7900 bytes

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