Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf7fbbcbe95ad79…

MALICIOUS

PDF

36.2 KB Authoring application: Serif PagePlus
MD5: fd86e1a4aaaf37298fb9e3facf1baf28 SHA-1: d40131f0e5ad6d968463539507539a6d749fc846 SHA-256: cbf7fbbcbe95ad79cc9da7c2cc7f18af4e50aa35b05eedaea978b0e678edcf7f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, specifically flagging it as phishing related. The primary attack pattern involves directing users to a vast collection of other PDF documents hosted across numerous domains, likely for SEO spam or to distribute further malware.

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://jeneemusic.net/uploads/1/3/0/6/130604850/3470431.pdf
    • http://www.overtimefitness.com/uploads/1/3/0/4/130478261/gijavoluniven.pdf
    • http://mytourphone.com/uploads/1/3/0/7/130738789/4183088.pdf
    • http://lashedbydanniee.com/uploads/1/3/0/7/130776891/fedivemevo.pdf
    • http://ninarinne.com/uploads/1/3/0/6/130639335/pakukororevaf.pdf
    • http://jeffreymilum.com/uploads/1/3/0/3/130324451/c6b94f710ed771.pdf
    • http://memfeet.com/uploads/1/3/0/6/130640020/bixid_gagujemonix.pdf
    • http://breastgroup.com/uploads/1/3/0/5/130589389/lapepinojut_gufoj_nigazogebeliwut.pdf
    • http://modimody.com/uploads/1/3/0/8/130813642/xafidukikor.pdf
    • http://missionexcell.com/uploads/1/3/0/2/130289347/ed505ef5e.pdf
    • http://thingsweleavebehind.com/uploads/1/3/0/6/130639865/nesuraduvis.pdf
    • http://diamondstorehawaii123.club/uploads/1/3/0/3/130313360/jijedadi.pdf
    • http://alphritasims.com/uploads/1/3/0/6/130621044/f9b1084.pdf
    • http://thechopstickdiet.com/uploads/1/3/0/5/130540106/410f1d53.pdf
    • http://drberrycoaching.com/uploads/1/3/0/8/130874410/nugesisi.pdf
    • http://skinsana.net/uploads/1/3/0/5/130588927/legixavogubis-pumokov.pdf
    • http://synergymhs.com/uploads/1/3/0/7/130739535/c5dda00ae2cd27a.pdf
    • http://m999g.salon225.com/uploads/1/3/0/6/130604411/130604411.html#acrobat+reader+version+9.x+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c2.bin
ca8cd33d6eb9ab7a3b9487a6bbed992732134957cc4c86dad4df9dda65563414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30C2 8064 bytes

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