Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11216eda0e99f36…

MALICIOUS

PDF

57.1 KB Authoring application: SWFTools
MD5: f67130f0b1949a0f9f26015ae9300df9 SHA-1: 6ffb7feb41a7f1488676b258de30d8eecb3d4a35 SHA-256: a11216eda0e99f36d787d4774ef095009d1133d09336a61a63cc0a5570dc027b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This technique is commonly used for SEO spam or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier further support the malicious nature of this file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mizzoureview.com/uploads/1/3/0/6/130604287/zifafozegiluzaf_wumaka.pdf
    • http://leadershipcv.net/uploads/1/3/0/7/130739615/4114950.pdf
    • http://napervillegardenclub.com/uploads/1/3/0/6/130620818/fazemuvonazoxoxe.pdf
    • http://pelletstoveguy.com/uploads/1/3/0/7/130775221/b7c677fe67.pdf
    • http://californiaspac.com/uploads/1/3/0/6/130604789/matoxo.pdf
    • http://www.poshpearlfloralshop.com/uploads/1/3/0/6/130605228/652379b3a.pdf
    • http://www.scanpony.com/uploads/1/3/0/5/130545097/lituzasebokawogan.pdf
    • http://eodreamers.org/uploads/1/3/0/6/130621640/pavetuxotokobesiz.pdf
    • http://southeastee.org/uploads/1/3/0/5/130543511/sorimerekakubak-tobipubojiv-wegezatepet-ditalutavo.pdf
    • http://www.rosesoftheworld.store/uploads/1/3/0/2/130291556/5310030.pdf
    • http://mta-sts.mail.gandersonhomesinc.com/uploads/1/3/0/5/130544134/jexeg-jowalemujulita.pdf
    • http://www.threadsembroidery.com.au/uploads/1/3/0/5/130589070/gumuworoj.pdf
    • http://revolutionpick.net/uploads/1/3/0/7/130776291/2db860d812.pdf
    • http://resurrectionofarunner.com/uploads/1/3/0/6/130621587/widupofufilowinurori.pdf
    • http://jasper-marianek.biz/uploads/1/3/0/8/130814513/mazidixavoj.pdf
    • http://kings-room.com/uploads/1/3/0/8/130874633/3665146.pdf
    • http://crihb.cuph.org/uploads/1/3/0/8/130813364/cadc34817ef3.pdf
    • http://kfit.co.nz/uploads/1/3/0/6/130604231/5847907.pdf
    • http://psychicgift.org/uploads/1/3/0/9/130969044/cce692219ebf07.pdf
    • http://bankrollmusic.com/uploads/1/3/0/8/130874648/bugovikovepuzop.pdf
    • http://showcasecrewingservices.com/uploads/1/3/0/2/130289748/jorujetuw-durosawisefalin-jogudoxi.pdf
    • http://protectsanbenito.org/uploads/1/3/0/4/130493893/245404c907.pdf
    • http://catawbapress.com/uploads/1/3/0/2/130287866/tesefodev.pdf
    • http://9pucc.slpny.com/uploads/1/3/0/6/130605412/130605412.html#online+word+to+pdf+converter+offline

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001543.bin
7d31c5af68644f792cf27ed49640a24d460fa04a683fbd612a3fb55da7b35cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1543 8208 bytes

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