Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1b780ef06edb2d…

MALICIOUS

PDF

41.8 KB Authoring application: Mobipocket Creator
MD5: 07c9e64cf5a68c24bef65b76b6e864ee SHA-1: b32329c5e0cb764687406d7b3ab7267aef76ff2b SHA-256: ca1b780ef06edb2db7cd77e714bbdbcd0818ae2ef6b5f577324aaa502ca7645a
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This is indicative of a link farm used for SEO manipulation or to distribute malicious content. The ML_NYX_PDF_MALICIOUS and ClamAV detections further confirm the malicious nature of the file. The embedded URLs are the primary indicators of compromise, likely leading to phishing pages or malware downloads.

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://medicoz.com/uploads/1/3/0/6/130639646/1727859.pdf
    • http://heronhouse.net/uploads/1/3/0/4/130483086/repixotakorigo-gurisuko.pdf
    • http://hostmaster.horsforthradio.co.uk/uploads/1/3/0/4/130483864/410016.pdf
    • http://yorkshirecajun.com/uploads/1/3/0/6/130621201/a07a102db712d7.pdf
    • http://la-parks.com/uploads/1/3/0/6/130603941/9243114.pdf
    • http://mail.syrianamericanclub.com/uploads/1/3/0/7/130776750/4883304.pdf
    • http://zepprecisionmachines.com/uploads/1/3/0/5/130589322/mizawogurog-zasaruz.pdf
    • http://cimarronestates.net/uploads/1/3/0/7/130740389/fufeb.pdf
    • http://www.makrspace.ca/uploads/1/3/0/6/130621132/zifumo_fununizi.pdf
    • http://wigstadtconsulting.com/uploads/1/3/0/3/130313748/5700385.pdf
    • http://www.wordythoughts.club/uploads/1/3/0/6/130621068/foviwusine.pdf
    • http://gelottiicecream.com/uploads/1/3/0/6/130639170/tozaneb.pdf
    • http://mindfuldemocracy.com/uploads/1/3/0/7/130776032/71df779cc6931.pdf
    • http://www.hgssummerprograms.com/uploads/1/3/0/6/130620614/ponazam.pdf
    • http://ifix-n-sell.com/uploads/1/3/0/2/130274017/5e1df7.pdf
    • http://paradigmfactory.com/uploads/1/3/0/7/130776616/2b26d71.pdf
    • http://nowallsministry.net/uploads/1/3/0/2/130288326/808b0f67c.pdf
    • http://imperiumdesign.net/uploads/1/3/0/2/130271113/8747039.pdf
    • http://skipstonepublishing.com/uploads/1/3/0/4/130476423/a39b4c.pdf
    • http://www.zekuntong.com/uploads/1/3/0/3/130323251/4454556.pdf
    • http://carrizalesforwarding.com/uploads/1/3/0/5/130588740/50cf582e1cc3f82.pdf
    • http://atcmusic.org/uploads/1/3/0/6/130622013/sulinojanido-mufurob-xexodikom-solaxawotid.pdf
    • http://www.pinsandbits.com/uploads/1/3/0/2/130271030/130271030.html#what+damage+can+acid+rain+do+to+the+environment
    • http://vsnofug.sites.looka.com/uploads/1/3/0/3/130323717/68fc82c8cf3a.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041bd.bin
ca66fd42456f476028bc800e9f398079f167da80d65b61da95c328cd6237567e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41BD 7792 bytes

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