Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e24106efd14f607…

MALICIOUS

PDF

46.3 KB Authoring application: Serif PagePlus
MD5: b44a1888bbd448a5c7cbaf1467f24b0d SHA-1: b791958c04e9cb3bc60fd540006496e9c5da40a9 SHA-256: 2e24106efd14f607d6bc27cac2b3cdcdfef4f6ea205f44a6812f7d74ff6e40db
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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://dumluckfishingequipment.com/uploads/1/3/0/7/130775391/pegakewukerisimu.pdf
    • http://shadesofucw.com/uploads/1/3/0/4/130488220/5405134.pdf
    • http://alpineconferencecenter.org/uploads/1/3/0/4/130483200/8358956.pdf
    • http://nileinstitute.org/uploads/1/3/0/5/130543050/boriwek.pdf
    • http://carolinaboardandbowl.com/uploads/1/3/0/7/130775295/9108858.pdf
    • http://trueelegancetransportation.com/uploads/1/3/0/5/130540869/d94f11c1cd7b6a.pdf
    • http://www.candlexqueen.com/uploads/1/3/0/6/130639085/xakazuparuleru-kikawowisu.pdf
    • http://teatroweb.com/uploads/1/3/0/7/130776008/826d316b26.pdf
    • http://www.melindacocharaneauthor.com/uploads/1/3/0/8/130813985/3603363.pdf
    • http://churnminator.io/uploads/1/3/0/6/130621531/7530dc91dd80.pdf
    • http://brevardautodeals.com/uploads/1/3/0/7/130740622/tagix.pdf
    • http://fldocprepinc.com/uploads/1/3/0/3/130323952/xozobedomexarafe.pdf
    • http://hoffmannmotorcycles.com/uploads/1/3/0/3/130313638/9120294.pdf
    • http://loveit-defaultspanish.devsite-1.com/uploads/1/3/0/2/130289773/130289773.html#famous+laissez+faire+sports+leaders
    • http://hoffmannmotorcycles.com/uploads/1/3/0/3/130313638/9

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000444d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444D 16036 bytes
font_01_sfnt_off00005b72.bin
42dc2dfc860a8153b3daba6cd70ba7c7730b3beff5b9ce48e4bd7edc58dbfb58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B72 8396 bytes

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