Malicious PDF — malware analysis report

Static analysis result for SHA-256 796e712272f4910f…

MALICIOUS

PDF

36.4 KB Authoring application: Poppler-utils
MD5: 751268645c2360a9f25db42aa2ad753d SHA-1: 73493d56dd700e3d31abed8bd8eeb9b84fee947a SHA-256: 796e712272f4910f339ee36f8ad10ba01b69c82544040bb9d1f3f68007915b58
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. 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://bes.pushkino-narkologiya.ru/uploads/2020/01/27/guxusazefel-sakoxumitokudis-gonusa-fivipo.pdf
    • http://xezulejapa.suddenweblink.online/uploads/2020/01/28/4732950.pdf
    • http://bowaxe.ddnshit.com/uploads/2020/01/27/04c4f86ca646f.pdf
    • https://juwilepupipif.weebly.com/uploads/1/3/0/2/130289291/bekolo.pdf
    • http://jedeg.remontbroker.ru/uploads/2020/01/28/716e7fef.pdf
    • https://dixologawav.weebly.com/uploads/1/3/0/5/130542770/zuzabetovevefex-fegonixukopix.pdf
    • http://milon.krasnodar-reshenie.ru/uploads/2020/01/27/637f5ec1c.pdf
    • http://rijabobiti.vipiski-besplatno57.icu/uploads/2020/01/28/bupidaxi.pdf
    • https://zepaxisoma.weebly.com/uploads/1/3/0/3/130323896/vakajusuvovige_fekitivisanur_xopuzobad_kuzalixawo.pdf
    • http://apple-bel.info/uploads/2020/01/29/bimupisafule.pdf
    • http://gurojuzuk.sledcomproc-kuzbass.ru/uploads/2020/01/28/kebuzotigixo-levedokogejono.pdf
    • http://private-girls.club/uploads/2020/01/28/3abb9d3e03.pdf
    • http://pug.eosplit.ru/uploads/2020/01/28/2561670.pdf
    • https://jezamoko.weebly.com/uploads/1/3/0/5/130546183/88468e369795a9.pdf
    • http://rad.goodway.su/uploads/2020/01/27/pobikijuzixisodoxo.pdf
    • http://nekubu.dotalounge.net/uploads/7269900.html#evony+the+king%27s+return+building+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014c9.bin
107911654cab56b917664a146f2920bd7384fcebbaaa4560ba297debc372d863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C9 8344 bytes

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