Malicious PDF — malware analysis report

Static analysis result for SHA-256 cafd746bd827cff9…

MALICIOUS

PDF

32.3 KB Authoring application: GIMP
MD5: 23eb109863437059a44d971e572ed1f9 SHA-1: c1d459651baa7957a84e668e764004428387f319 SHA-256: cafd746bd827cff90a49424abe3a6dc146536512dd67814db0d0df1a8533147e
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files hosted on various domains. This behavior is indicative of an SEO spam or phishing campaign, aiming to drive traffic to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification.

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://cresswellpaints.com/uploads/1/3/0/5/130543511/fumimo.pdf
    • http://paradiseuganda.net/uploads/1/3/0/6/130620490/rexikoxidaw.pdf
    • http://ubiomes.com/uploads/1/3/0/9/130969552/xepaxu.pdf
    • http://tearoseclothing.com/uploads/1/3/0/6/130621727/wemude.pdf
    • http://jackpassion.net/uploads/1/3/0/7/130739387/kafuto.pdf
    • http://mysistershouseonline.org/uploads/1/3/0/2/130289775/silupakugebasus.pdf
    • http://www.skywardmgmtconsulting.com/uploads/1/3/0/6/130603958/mozilufa-lirumojev.pdf
    • http://knowledge-university.org/uploads/1/3/0/6/130603841/0af3e697d.pdf
    • http://alrt.store/uploads/1/3/0/4/130476244/xumewadezer-razosapijiguw-sevirerus-vepox.pdf
    • http://objectrelationsrecords.com/uploads/1/3/0/6/130639406/rafuzelixiba.pdf
    • http://notallroses.com/uploads/1/3/0/6/130621507/9afb1.pdf
    • http://talkupyute.com/uploads/1/3/0/5/130588210/gakoxoxupi.pdf
    • http://hitchly.com/uploads/1/3/0/6/130639646/didevuk-vaninemuput.pdf
    • http://the-whole-thing.com/uploads/1/3/0/5/130543568/130543568.html#revista+digital+boticario+ciclo+9+2019
    • http://hitchly.com/uploads/1/3/0/6/130639646/didevuk-vaninemuput

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000024bf.bin
3ea8e6a2343752ee16369bc4d10b7fa8e8e7b498b9136c9c8366e8295f1beebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BF 9336 bytes

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