Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f164d909ddb669…

MALICIOUS

PDF

47.1 KB Authoring application: QPDF
MD5: d17fd95d742a520f963ea073d881b103 SHA-1: 73ec5436de9ffcf9961be8135374aa930c164f08 SHA-256: 71f164d909ddb669a8e7a782daabebf44de85bebac7b79de674b3dbd4a72898c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. This technique is often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

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://theprofesionalgardener.org/uploads/1/3/0/6/130621818/tolekodit.pdf
    • http://lk-ug-mts.ru/uploads/2020/01/27/fb3fa.pdf
    • http://2325maurystreet.com/uploads/1/3/0/6/130620296/76a23a8a.pdf
    • http://agicole-acces.com/uploads/2020/01/27/kizadakulad.pdf
    • http://jetun.kropanev.online/uploads/2020/01/29/5efe1c.pdf
    • http://chama.site/uploads/2020/01/28/508d111764.pdf
    • http://gentlemensphoto.com/uploads/1/3/0/3/130313271/7089423.pdf
    • http://cailynv.com/uploads/1/3/0/6/130620843/5407462.pdf
    • http://filudari.pavlogradgallery.ru/uploads/2020/01/28/depujaxezenaribo.pdf
    • https://mejabaxab.weebly.com/uploads/1/3/0/5/130588947/61a5054b1a.pdf
    • http://lovewarrioryogaschool.com/uploads/1/3/0/6/130621665/2134841.pdf
    • http://countryvillagehoa.com/uploads/1/3/0/5/130588656/gukodowivadula-fokiw-sofidumes-linumepipir.pdf
    • http://wijow.paulandkelsey.com/uploads/2020/01/28/wolaxo.pdf
    • http://jetorowu.virus-gepatita.net/uploads/2020/01/28/podokibifa_kojadupataro_kesuperebim.pdf
    • http://eastendtrx.com/uploads/1/3/0/4/130435833/130435833.html#dr.+becker%27s+real+food+for+healthy+dogs+and+cats
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000065f2.bin
2be7ba8f8bc6a0b434a2099e527a749c6f0c8bb7d0ae4e174e3b4c73f292e40a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x65F2 20756 bytes
font_00_sfnt_off00001403.bin
0664ee30fbd98b6c896e604fe26642d6bf01bbe020aa4fe1bda309e1d1afb65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1403 8160 bytes

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