Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3f1eeabc9b74d3d…

MALICIOUS

PDF

35.2 KB Authoring application: Scribus
MD5: e03d435687a5f5093ce63b291c745d73 SHA-1: 507ae1476da987cd0dc0e7f477664f338cbb0dcb SHA-256: b3f1eeabc9b74d3da246d38038462677f7920e7e693a22802a13ac19f11caff8
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, likely serving as entry points for further 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://www.sewsimplehalifax.ca/uploads/1/3/0/4/130483940/1013837.pdf
    • http://tylerdsmith.org/uploads/1/3/0/2/130287842/7536421.pdf
    • http://breimhurst.com/uploads/1/3/0/6/130604737/6396377276.pdf
    • http://www.oakridge-academy-of-riding.com/uploads/1/3/0/5/130547689/d6381dfe448ff.pdf
    • http://www.petalesdefleurs.com/uploads/1/3/0/6/130620399/rofapevubej-zuvinawaj-lepew.pdf
    • http://nakedbuck.com/uploads/1/3/0/5/130588688/gopesamikowos.pdf
    • http://ecuriesduchateau.com/uploads/1/3/0/6/130621656/55eb384641a.pdf
    • http://deeliastudios.net/uploads/1/3/0/8/130813063/rolonexovoru_xejubotoj.pdf
    • http://ccevaluations.com/uploads/1/3/0/7/130775284/9bd030fc95877.pdf
    • http://antiochmissionarybaptist.org/uploads/1/3/0/3/130313148/bagijewoxokuwojiwupe.pdf
    • http://www.communitiesincollaboration.com/uploads/1/3/0/4/130490488/00812a0.pdf
    • http://hawaiiblogging.com/uploads/1/3/0/7/130775971/49f7857dd47f44.pdf
    • http://neo-water.net/uploads/1/3/0/6/130621240/c1bcd1b61dff320.pdf
    • http://mail.elizabethkelleylaw.com/uploads/1/3/0/8/130813831/vezajiwu.pdf
    • http://www.maliakblake.com/uploads/1/3/0/8/130813897/130813897.html#functions+of+hormones+secreted+by+adrenal+gland
    • http://www.communitiesincollaboration.com/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003220.bin
c5a2045245c92fcbfacc7964358c3475a4b153480e8d775043ca01d82dcb23af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 7052 bytes

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