Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecf7c49538afb989…

MALICIOUS

PDF

35.2 KB Authoring application: Serif PagePlus
MD5: 3717c80117d089e82dcc2a9ff1a650c2 SHA-1: ab9a8ff058d6c99a546b66c92ba833095760670c SHA-256: ecf7c49538afb989a7df34cbe0fb0da8aebc2341059d0a82ca2af00ec3bd430c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are likely part of a link farm designed to direct users to potentially harmful sites or download further payloads.

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://waypointpublications.com/uploads/1/3/0/4/130476519/74b2445a4541d.pdf
    • http://bayareaboatandhomeloans.com/uploads/1/3/0/5/130551927/3251513.pdf
    • http://www.ohiovalleybuilder.com/uploads/1/3/0/5/130547207/4282803.pdf
    • http://nashvillerollingpins.com/uploads/1/3/0/7/130739519/35c84f892a7de.pdf
    • http://bangkokkettlebells.com/uploads/1/3/0/6/130639296/lokolakejuwij.pdf
    • http://www.blackoakcreativecampaign.com/uploads/1/3/0/4/130477775/poxiwitufuxetixu.pdf
    • http://randakksstaging.com/uploads/1/3/0/5/130551477/netivabote.pdf
    • http://www.responsiblysourced.co/uploads/1/3/0/4/130483928/9491141.pdf
    • http://lakecountyrecovers.org/uploads/1/3/0/5/130542894/cceaa89.pdf
    • http://dadicatedco.com/uploads/1/3/0/5/130539992/vinevawo_kofipowedusigo_nozisudifi.pdf
    • http://rotulossantiago.com/uploads/1/3/0/5/130590608/tupakes.pdf
    • http://mta-sts.mail.floweroflovesf.com/uploads/1/3/0/4/130475990/boguvujek.pdf
    • http://719.bpmtc.com/uploads/1/3/0/5/130589097/130589097.html#ethnographic+research+methods+sociology

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000328f.bin
99df06e3d4d9b12c078f341a011aec9e7cad33ee806c41651dcaad6d58cd226d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x328F 7596 bytes

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