Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62e2f10a816cf49…

MALICIOUS

PDF

47.6 KB Authoring application: Solid Converter PDF
MD5: e198834c0f22d72b07de98eb1edde760 SHA-1: 109c3170c039bf5daabb0a1ab336e54d1c53331a SHA-256: e62e2f10a816cf491387001ab9d707367d0fa93241407908779cb7ba892b7419
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1566.002 Phishing:Spearphishing Link

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning to drive traffic to malicious sites or for phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body itself appears to be corrupted or contains obfuscated text, but the presence of numerous links to PDF files on various domains points towards a link farm or redirection scheme.

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://bmorewell.com/uploads/1/3/0/2/130271099/xatoruke.pdf
    • http://analogi.us/uploads/1/3/0/2/130270892/burirajivetuxo_mevefowox.pdf
    • http://20never.com/uploads/1/3/0/2/130271240/8195430.pdf
    • http://pnwveggiegirl.com/uploads/1/3/0/5/130543310/9780990.pdf
    • http://lamariposatexas.com/uploads/1/3/0/5/130541073/jobomivakotelu_dododopiw.pdf
    • http://noojoom-swissra.com/uploads/1/3/0/5/130548108/7106391.pdf
    • http://pebekukip.swealth.net/uploads/2020/01/29/ee379aaca.pdf
    • http://nomnomnatural.com.au/uploads/1/3/0/2/130289433/risarogaxarenekoxabe.pdf
    • http://oicservices.org/uploads/1/3/0/5/130541661/989185.pdf
    • http://newspiritholdings.com/uploads/1/3/0/5/130590168/830dfc215a7b.pdf
    • http://createpowtoon.com/uploads/1/3/0/5/130590592/3beec04149897.pdf
    • http://advancedinstallations.com/uploads/1/3/0/6/130620669/muzesibat.pdf
    • http://kcgweb.com/uploads/1/3/0/5/130543740/vofoxuf.pdf
    • http://sibawexar.3ndfl-nalogi.ru/uploads/2020/01/28/2ea62dab906.pdf
    • http://moretonislandfishingcharters.com/uploads/1/3/0/3/130313343/8378251.pdf
    • http://ninu.cryptoinfosys.com/uploads/2020/01/27/puboviwafutinirob.pdf
    • http://adjustingspecialists.com/uploads/1/3/0/2/130273799/8627f.pdf
    • http://motivationalresearch.org/uploads/1/3/0/5/130543133/b9f00d1a.pdf
    • http://cmma2017.info/uploads/1/3/0/6/130603841/3596095.pdf
    • http://mydhfastmandat.com/uploads/1/3/0/6/130620302/2619817.pdf
    • http://techtoberfestoc.com/uploads/1/3/0/6/130621663/jufibuvapa-mirofaxigiw.pdf
    • http://boltewireless.com/uploads/1/3/0/2/130289589/f8cce.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/5/130547515/130547515.html#climate+action+network+report+card

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000163f.bin
258309da3a7d1e95032f9ca6967a53f456a98072aaea4b75831499b4c0227f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x163F 8656 bytes
font_01_sfnt_off00007e99.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E99 2668 bytes

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