Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87606b72df15113…

MALICIOUS

PDF

43.9 KB Authoring application: ImageMagick
MD5: f4ddfe8a1f62fb314cef3257a6e29bde SHA-1: 9b51830ca922ced4bced5b7a5a65c6ce0aced5a3 SHA-256: a87606b72df15113900e221c59c01f85165ca6b273dfcdd05f705b45143efb1f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm and ClamAV detection as phishing malware. The document body contains numerous embedded URLs, with the primary domain being pux.doma-2.ru. These links are likely designed to redirect users to malicious sites, facilitating phishing attacks or malware downloads.

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://pux.doma-2.ru/uploads/2020/01/27/pepef-mejagagupu-dubis-nifubufusojiriw.pdf
    • http://ultimatemartialartsusa.com/uploads/1/3/0/6/130620959/2107950.pdf
    • http://micrusade.com/uploads/1/3/0/6/130639107/96016f357c06.pdf
    • https://gaxekonop.weebly.com/uploads/1/3/0/2/130272325/kebuwofowi.pdf
    • http://nakedbl0ndeee.com/uploads/1/3/0/5/130590719/fenerirowub-guresonoxi-nesarevifuvoz-zugoluxe.pdf
    • http://meridian-dcg.com/uploads/1/3/0/5/130588907/zumure-zukisoke-gekevixi.pdf
    • http://100wwclickingcounty.org/uploads/1/3/0/2/130271207/a7950.pdf
    • http://bergeneducational.com/uploads/1/3/0/5/130545334/gelexovevisa.pdf
    • http://craftsmanmarketing.com/uploads/1/3/0/4/130435726/nelikabemexelam-vujuz-jelewirodilopa.pdf
    • http://key-to-style.com/uploads/1/3/0/2/130287837/laxolador.pdf
    • http://parislomas.net/uploads/1/3/0/5/130550713/c2f27c391462c.pdf
    • http://dancedietitian.com/uploads/1/3/0/6/130604988/pexovovakifovib.pdf
    • http://pameladirnberger.com/uploads/1/3/0/7/130739169/130739169.html#apnea+of+prematurity+guidelines+aap

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c4.bin
026d5250ef5606bc835e94075e231b50e04430e9e905fb9a15c25e56a66bb58a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C4 8924 bytes

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