Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9bc2d3bfeb0617…

MALICIOUS

PDF

44.8 KB Authoring application: ImageMagick
MD5: 0619d357a3449899128c111ccc6416bc SHA-1: e62b5ea7b851a8464537770ce4a6ffe15f2a7700 SHA-256: cf9bc2d3bfeb0617523eb309212729155ef8dcb2013ee382fb5d4992c3d03edd
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, mentions 'carpal tunnel syndrome operation' as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://murillochiropractic.com/uploads/1/3/0/5/130588716/duzokoje-somusedewo-tubigepaboba-vixonafi.pdf
    • http://dorsetheartdoctor.com/uploads/1/3/0/5/130539457/wafunudofavas-vavofim-fuzirolodenud.pdf
    • http://cdteachers.com/uploads/1/3/0/3/130323216/338a8.pdf
    • http://annamyers.info/uploads/1/3/0/7/130776702/402d6cf8ed288a.pdf
    • http://norwoodcavies.com/uploads/1/3/0/6/130604642/1326683.pdf
    • http://taxidermydirect.co.uk/uploads/1/3/0/5/130588433/3d06adc8d7f.pdf
    • http://mh-aero.de/uploads/1/3/0/7/130775197/nasiwa-fanodiwatorara-sibenisinojenuj.pdf
    • http://phdentists.com/uploads/1/3/0/6/130621298/5273e.pdf
    • http://mysunshinerides.com/uploads/1/3/0/6/130604823/d060b1ab7d110.pdf
    • http://xsex.site/uploads/1/3/0/6/130620176/1bbc3d.pdf
    • http://patrickjbryan.com/uploads/1/3/0/5/130551191/warot_bilefisaguda_fexupejiwolep_widopejiragoji.pdf
    • http://escortsclassifiednetwork.com/uploads/1/3/0/5/130539319/kukopit_tisedabi_lejesiteduxero_liwemubova.pdf
    • http://mta-sts.mx.greenband.net/uploads/1/3/0/6/130605073/ed872a5a55.pdf
    • http://birdholidays.eu/uploads/1/3/0/4/130477492/8858115.pdf
    • http://pmc2u.com/uploads/1/3/0/5/130540795/nuxadiwuno.pdf
    • http://donnayoo.com/uploads/1/3/0/4/130436078/fepugotituwikafetu.pdf
    • http://quietrunlimited.com/uploads/1/3/0/6/130639552/2783496.pdf
    • http://mouthdoctor.net/uploads/1/3/0/7/130775507/2375913.pdf
    • http://drjosephetrezza.com/uploads/1/3/0/5/130550812/devaforadagako.pdf
    • http://dg3hu8.salon225.com/uploads/1/3/0/5/130588554/130588554.html#recovery+time+from+carpal+tunnel+syndrome+operation
    • http://cdteachers.com/uploads/1/3/0/3/13

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005199.bin
ea742989c38244e28771bba8f9aa5ef2511f0edc29a441931d9e2aac7cf7e682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5199 7724 bytes

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