Malicious PDF — malware analysis report

Static analysis result for SHA-256 11dced30f779ed1e…

MALICIOUS

PDF

37.4 KB Authoring application: Poppler-utils
MD5: 9539d8e0baa5085b0f0b3a30ed811929 SHA-1: 5f5f9d98502556f7b2897e7187595b6a6413b339 SHA-256: 11dced30f779ed1e8e9b5b7b50b22c84475ca65c31d7b5b012661a347700fc4a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. ClamAV and ML classifiers also flagged this file as malicious, specifically identifying it as a phishing attempt. The embedded URLs are the primary indicators of malicious activity.

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://mirrorimagedanceteam.com/uploads/1/3/0/4/130476816/fudomo_woguz_pirorip_xadiruwos.pdf
    • http://mytmch.com/uploads/1/3/0/6/130620327/6988770.pdf
    • http://lagux.pokupka-shop21.ru/uploads/2020/01/29/3433345.pdf
    • http://revolution-coffee.net/uploads/1/3/0/5/130550847/2db447f64d510.pdf
    • http://kuzuwix.itilavto.ru/uploads/2020/01/28/wibimibetu.pdf
    • http://lineaamericana.com/uploads/1/3/0/4/130483409/dakijupolo.pdf
    • https://jenelofipigini.weebly.com/uploads/1/3/0/5/130589080/wupas.pdf
    • http://mgsathletics.com/uploads/1/3/0/3/130379638/50a3b.pdf
    • https://soredugoz.weebly.com/uploads/1/3/0/2/130272484/dujojofap.pdf
    • http://modernmoroni.org/uploads/1/3/0/3/130323216/pujupuv.pdf
    • http://beadmesilly.com/uploads/1/3/0/6/130621244/130621244.html#formal+pant+suits+for+wedding+guest

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000137e.bin
db69a040f4c94af2356e7479641f07b757417f2c244913e9537196b87ac92970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137E 10544 bytes

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