Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c664fba048cff4b…

MALICIOUS

PDF

45.8 KB Authoring application: ImageMagick
MD5: b12cc032b3014c64e9d50bdab43f9cf4 SHA-1: 75ba4e1a1b6d60c758af9dc16476749a4925f76a SHA-256: 9c664fba048cff4b2001898452b96b370a406c94e1395afaf053a24679f8b8df
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique, identified as PDF_SEO_LINK_FARM, is commonly used to create link farms for SEO manipulation or to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery through these linked PDFs.

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://nemozsun.com/uploads/1/3/0/2/130289284/pigiveze-xazul.pdf
    • http://insideoutattorney.com/uploads/1/3/0/7/130775845/nokidoped-makarebokafix.pdf
    • http://cams-collection.com/uploads/1/3/0/6/130639212/wopegajuwemo-mibofugepefol-feriwadobel-jiposolufedezu.pdf
    • http://conduitgames.com/uploads/1/3/0/4/130478760/1492962.pdf
    • http://blueagavebarcom.com/uploads/1/3/0/5/130590312/312ba07ee.pdf
    • http://camilamcnemar.com/uploads/1/3/0/2/130289252/rakirubupapir.pdf
    • http://masonicformation.net/uploads/1/3/0/5/130542852/66adeade892c.pdf
    • http://smartpromoting.com/uploads/1/3/0/5/130590716/d93783.pdf
    • http://visitoz.org/uploads/1/3/0/6/130621114/a1056359ebfc.pdf
    • http://coge.me/uploads/1/3/0/7/130775668/d7dbc46.pdf
    • http://autodiscover.arkoghosh.com/uploads/1/3/0/8/130873976/pofagujukil.pdf
    • http://micheletroy.com/uploads/1/3/0/5/130543575/2785767.pdf
    • http://agilicorp.com/uploads/1/3/0/2/130273582/dezakesariteg_lulabe_fupovum_tavijumakosope.pdf
    • http://prs4wealthcreation.net/uploads/1/3/0/2/130288447/8060721.pdf
    • http://oceanateyelevel.com/uploads/1/3/0/7/130775475/8860691.pdf
    • http://strawberrygoosephotography.com/uploads/1/3/0/6/130620693/tinopigugo.pdf
    • http://wbsmachinery.com/uploads/1/3/0/6/130639249/3924696.pdf
    • http://beginningphpandmysql.com/uploads/1/3/0/4/130488946/07e2aa.pdf
    • http://nancynjuguna.com/uploads/1/3/0/2/130292148/e8a2271a8ad5ec.pdf
    • http://host209.carmichaelnl.com/uploads/1/3/0/6/130604475/130604475.html#blender+2.79+theme+for+2.8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004511.bin
7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4511 2732 bytes
font_01_sfnt_off00005194.bin
c4fe82445519a71a4bfe252b8bcba55419480ca1886f7e2cfd87924b63670e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5194 9072 bytes

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