Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b298bf5ca04e618…

MALICIOUS

PDF

38.3 KB Authoring application: Karbon
MD5: 13d92347626252e4007b9ae9989edb4c SHA-1: 0c0e06c10e32f054be1cb93ac86fc7e82301260b SHA-256: 2b298bf5ca04e618ae69b34e6d9c674718a03cb51c406b99bd56fce2f76e6a2b
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the phishing and redirection attack pattern.

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://trinitykalispell.com/uploads/1/3/0/6/130639728/4848db2687fac3.pdf
    • http://adriennemilan.com/uploads/1/3/0/5/130588396/joduzawelumagemut.pdf
    • http://mysmartptt.com/uploads/1/3/0/3/130379248/0ebbfdcd1b549.pdf
    • http://nevewinter.com/uploads/1/3/0/6/130639764/papezizig_gogig.pdf
    • http://clearstonesolutions.net/uploads/1/3/0/2/130288447/lujudivugej_moponisuba_nemuwukad.pdf
    • http://temadecor.ru/uploads/2020/01/29/xowujitasi.pdf
    • http://moneymogul.net/uploads/1/3/0/6/130621686/2597748.pdf
    • http://nagi.sledcomproc-kuzbass.ru/uploads/2020/01/27/0af74.pdf
    • http://magasekos.lpmti.com/uploads/2020/01/28/56c061b6.pdf
    • http://heavenlynaturalhh.org/uploads/2020/01/29/3844391.pdf
    • http://lightofsophia.com/uploads/1/3/0/4/130476493/6d1a405e4.pdf
    • https://gunoguzijanud.weebly.com/uploads/1/3/0/2/130289096/zunuko-zuvozese-ramovokubigaz-rofafusituluw.pdf
    • http://miracleinabucket.com/uploads/1/3/0/2/130291552/130291552.html#bixby+home+apk+for+oreo

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000135f.bin
eaa9a55e5c3e44b81bcd0c3022de7577777deb48876b00f542c6d5321a570e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135F 8504 bytes

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