Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a504e14d12b98a5…

MALICIOUS

PDF

34.2 KB Authoring application: PDF Studio
MD5: eeca442632b66cf5bab659063e7c92e9 SHA-1: 62b33409d7cfadcf36f70e96ec0ade9ff717ce30 SHA-256: 6a504e14d12b98a53989f3923898cfe0dd01bae64659ba0d0025e51c292c3ef6
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, with the ClamAV signature suggesting a phishing or traffic redirection purpose. The embedded URLs likely serve to direct users to malicious sites or to manipulate search engine rankings.

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://nancyleong.com/uploads/1/3/0/5/130590278/wimazetazoxepi.pdf
    • http://cigarclubmodesto.com/uploads/1/3/0/6/130640027/zotowo.pdf
    • http://azbasketballcoaches.com/uploads/1/3/0/3/130313191/cbd7c156.pdf
    • http://premiumadultdiapers.com/uploads/1/3/0/4/130488304/e02f3565a684.pdf
    • http://carolpunt.com/uploads/1/3/0/5/130590467/3ea3564.pdf
    • http://tampabaybeertrail.com/uploads/1/3/0/7/130739452/0182a3cd.pdf
    • http://tripvector.org/uploads/1/3/0/6/130605380/d2bd8bea.pdf
    • http://victorywebconsulting.info/uploads/1/3/0/2/130288334/c25062364.pdf
    • http://amcarizona.com/uploads/1/3/0/2/130272511/nulinaxeb.pdf
    • http://www.sunshinecoasttreecare.com/uploads/1/3/0/6/130603892/b903b697e.pdf
    • http://hostmaster.greyeggproductions.com/uploads/1/3/0/7/130775366/130775366.html#alcatel+one+touch+2008g+haszn%C3%A1lati+%C3%BAtmutat%C3%B3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ca5.bin
0634f6a9841bd87bef737a91a66bf37b5bfe9281a8ceea1abd3274d75343487c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA5 9804 bytes

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