Malicious PDF — malware analysis report

Static analysis result for SHA-256 726742705e09d067…

MALICIOUS

PDF

29.1 KB Authoring application: SWFTools
MD5: fe6f542184318a7541e4c9d93c93f27c SHA-1: cf4bd43c00f62274fa463f2b01f8fc4811f2e9df SHA-256: 726742705e09d067df23684a59513cf822d7faf5174f02eba5cfeeee6c18a357
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to host malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious. The embedded URLs are the primary IOCs, suggesting a phishing or content-luring attack vector.

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 https://bukozorofomav.weebly.com/uploads/1/3/0/2/130287995/wetodokulipatepen.pdf
    • http://kimrichardsart.com/uploads/1/3/0/2/130271114/wakofog_vukafipi_fowavinevixe.pdf
    • https://roworuwofizema.weebly.com/uploads/1/3/0/5/130546645/faxanubulibinipe.pdf
    • http://te-global.site/uploads/2020/01/28/paziga.pdf
    • http://gpisgroup.com/uploads/1/3/0/6/130603772/2399559.pdf
    • http://montanaterritorialalliance.org/uploads/1/3/0/6/130605433/4894212.pdf
    • http://zuwovidune.filelinux.com/uploads/2020/01/29/nutufisufali-kozegeti.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/2/130288962/130288962.html#exclamation+sentence+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001139.bin
ec47d506441f2620b6898ed5d3c427f266f051be8f6c4cce82a8009a950ce66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1139 7512 bytes

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