Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df02de199759545…

MALICIOUS

PDF

36.9 KB Authoring application: SWFTools
MD5: c181dc6d551f7a3afea9c037fabdcd25 SHA-1: 7154d06e2c822886c4b0cf171cbcfb251d283eae SHA-256: 1df02de199759545575ac1c99d27e193b40ef33b2ed49acc642d04c2c3fdd67f
150 Risk Score

Malware Insights

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

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. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to game downloads, suggesting a lure to entice users to click on the embedded links.

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://mydsasecurity.com/uploads/1/3/0/2/130272592/6393037.pdf
    • http://emilymullikindesign.com/uploads/1/3/0/6/130621354/povatimakup_soduse.pdf
    • http://michellewellingtonphotography.com/uploads/1/3/0/5/130540146/vemunusonuvugax-sajirimevufib-mudejevajep-rakuwobutun.pdf
    • http://mrpresscleaners.com/uploads/1/3/0/6/130604112/7404999.pdf
    • http://periscopedigital.com.au/uploads/1/3/0/3/130323390/buxepe.pdf
    • https://biguxujupivew.weebly.com/uploads/1/3/0/5/130545097/e10e060aec.pdf
    • http://vergisdigitalmarketing.com/uploads/1/3/0/3/130379137/1614172.pdf
    • http://24h-loodgieter.be/uploads/1/3/0/3/130323190/130323190.html#best+bow+and+arrow+games+android

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011f2.bin
019a841acb59b52db3f4614d7a221ab995d3ae4dabf5875ab493793b6f4689e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2 8680 bytes

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