Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbaa6e7d7b17c3b2…

MALICIOUS

PDF

39.8 KB Authoring application: QPDF
MD5: bfdf691ed943fbdb543b4d03a212700b SHA-1: 895f8c2c3e5db2724a5ad65735f501ead6ed39e7 SHA-256: fbaa6e7d7b17c3b2e465af0a325283fd3b22516e2c694c954e46ba235e590d18
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common technique for SEO poisoning and phishing. The ClamAV detection and ML classifier strongly indicate maliciousness. The embedded URLs likely lead to further malicious content or phishing pages. 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://fourchime.com/uploads/1/3/0/5/130590561/b2ab804e940b.pdf
    • http://containerconstructionpros.com/uploads/1/3/0/2/130287898/vatewof-mexifisuj-jivutemurogema.pdf
    • http://iqvi.mobi/uploads/1/3/0/6/130605506/jikawe.pdf
    • http://www.latinainlosangeles.com/uploads/1/3/0/5/130550828/4232176.pdf
    • http://qnek.net/uploads/1/3/0/8/130874084/7074674.pdf
    • http://cascademassageclinic.com/uploads/1/3/0/6/130603811/2286705.pdf
    • http://pasturepride.com/uploads/1/3/0/5/130589334/235507.pdf
    • http://513freemusic.com/uploads/1/3/0/4/130483765/c5f66.pdf
    • http://generations-online.com/uploads/1/3/0/2/130291589/5909201.pdf
    • http://absurdalternative.com/uploads/1/3/0/8/130874218/4549658.pdf
    • http://www.forterestorationandconstruction.com/uploads/1/3/0/5/130588380/64c05c6.pdf
    • http://dankepadre.com/uploads/1/3/0/6/130621108/130621108.html#gastroparesis+diabetes+treatment

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004588.bin
a50594b4f32a76ee7a533505f753ae553b8e0219ebb28b902f9cdfd90e25e195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4588 7864 bytes

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