Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88409fa5b58122c…

MALICIOUS

PDF

40.0 KB Authoring application: PDFBox
MD5: cfeffd32b128f2419153720e66d2aa3d SHA-1: 01352560adf8df8b33b3beb4bd47b176f2f1158a SHA-256: d88409fa5b58122cedbe6cbb13f5216fed2f06698b78907ce52b25c1219782e9
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or SEO manipulation tactic. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly suggest malicious intent. The primary attack pattern involves directing users to a network of potentially malicious or misleading content via these numerous 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://mexiitem.com/uploads/1/3/0/2/130271159/69565fa.pdf
    • http://montbros.com/uploads/1/3/0/6/130639305/10b95f558.pdf
    • http://mymmtx.com/uploads/1/3/0/5/130550981/6789769.pdf
    • http://morongovalley.org/uploads/1/3/0/4/130483895/6304637.pdf
    • http://dematic-university.com/uploads/1/3/0/8/130814682/difutenelame.pdf
    • http://eterpath.com/uploads/1/3/0/2/130289340/nomezajuvos.pdf
    • http://thelimitlessonline.com/uploads/1/3/0/6/130605069/1e562d.pdf
    • http://notoedrag.com/uploads/1/3/0/6/130621896/dukolowagefirurul.pdf
    • http://namoidesigns.com/uploads/1/3/0/6/130604820/145567.pdf
    • http://adultchildrelationshipmatters.co.uk/uploads/1/3/0/4/130435930/xosokanuwezazovaguw.pdf
    • http://alleycatguitarshop.com/uploads/1/3/0/8/130814235/xogarodipisan.pdf
    • http://mudanza-s.com/uploads/1/3/0/4/130483277/nunixixizuxon.pdf
    • http://chinamuslimonline.com/uploads/1/3/0/5/130539373/b866ee58ab.pdf
    • http://bonothechristian.com/uploads/1/3/0/6/130639449/ziweja.pdf
    • http://metairielaw.com/uploads/1/3/0/7/130775837/b186598c70.pdf
    • http://matterportservices.com/uploads/1/3/0/8/130873944/9df85696bfd980.pdf
    • http://jordancasting.com/uploads/1/3/0/6/130620491/mudibutajenedoj-xiwulagitobemaf-sageragetaxesa.pdf
    • http://www.moneyspinner4u.com/uploads/1/3/0/4/130476318/6007693.pdf
    • http://botoxalpharetta.com/uploads/1/3/0/7/130739653/6cda762e.pdf
    • http://creepyoutfitlab.com/uploads/1/3/0/2/130271232/765133.pdf
    • http://mail.staghornridge.com/uploads/1/3/0/4/130436492/130436492.html#maslow%27s+theory+of+motivation+in+the+workplace
    • http://adultchildrelationshipmatters.co.uk/uploads/1/3/0/4/130435930/xoso

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c5a.bin
fb0f04e45cffd48493c879fb729d431aba3954f265b91b78c39bbb5919ca36b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C5A 8264 bytes

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