Malicious PDF — malware analysis report

Static analysis result for SHA-256 aafeccd39bf9f180…

MALICIOUS

PDF

30.8 KB Authoring application: Nitro PDF
MD5: 89016447c159c36ec1e55cf626826a3f SHA-1: 88d593171681c3682448c7d380c098dc87608194 SHA-256: aafeccd39bf9f1804274bd3d5d2deefb3ecaf05c1391f45df646fd2a37d58f13
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://snorefreeformula.com/uploads/1/3/0/5/130550981/a022ae1e8a1.pdf
    • http://politicalresearch.net/uploads/1/3/0/8/130813652/zujone_xasinuxob_wakeranafe.pdf
    • http://casaservicesfinanciers.com/uploads/1/3/0/2/130288962/gisedefapabukatiw.pdf
    • http://azamericansaddlebredfoundation.org/uploads/1/3/0/9/130970022/xeviz.pdf
    • http://process-cooling.net/uploads/1/3/0/6/130604604/4708088.pdf
    • http://74-123-77-18.mgwnet.com/uploads/1/3/0/6/130621155/5ed9e.pdf
    • http://sweetliving.net/uploads/1/3/0/6/130604716/2293629.pdf
    • http://stylebydesiree.com/uploads/1/3/0/3/130312924/veneduwoj.pdf
    • http://arcsurgery.org/uploads/1/3/0/6/130620267/vekizagamejo.pdf
    • http://watercolorcreativitylessons.com/uploads/1/3/0/6/130604599/geses.pdf
    • http://cmscleaning.net/uploads/1/3/0/6/130603895/4d0e9d210beb49f.pdf
    • http://stepuprecruiters.com/uploads/1/3/0/8/130874631/bupuvukop.pdf
    • http://www.polarisranger.ca/uploads/1/3/0/7/130775734/5882d4715.pdf
    • http://www.teachingcharacter.net/uploads/1/3/0/4/130488773/3147126.pdf
    • http://jke.brdge.org/uploads/1/3/0/5/130588463/130588463.html#4000+essential+english+words+3+pdf+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002123.bin
44d5c4fe5a63bc42acb3db2f7badbc9d75b20beb99adbad83b2c91855581d5f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2123 6760 bytes

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