Malicious PDF — malware analysis report

Static analysis result for SHA-256 f35e4f3cf62876e2…

MALICIOUS

PDF

45.4 KB Authoring application: Karbon
MD5: 427ff30bd9f6566f58a630486c02a840 SHA-1: 0ff3c9476639a50c432bf64751fb0e47e61050ca SHA-256: f35e4f3cf62876e282433bfdda61235e919230f57da92bea6eb208cf60dd1099
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The embedded URLs are likely used to distribute malicious content or redirect users to phishing sites.

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://bovun.binturkey.club/uploads/2020/01/28/vefakedafege.pdf
    • http://motherhenmusic.org/uploads/1/3/0/4/130489038/vafepigubot.pdf
    • http://beasleycounselingservices.com/uploads/1/3/0/2/130274371/rokugututox_nalax_bonujiw.pdf
    • http://legaleurope.com/uploads/1/3/0/4/130483912/pawazokogalenofade.pdf
    • http://noridirg.com/uploads/1/3/0/3/130379504/fifadaro.pdf
    • https://fujoramewozige.weebly.com/uploads/1/3/0/5/130551585/bagexixim-midakox-lafosoxurak.pdf
    • http://rockymountainhomeinvestors.com/uploads/1/3/0/5/130588277/8011999.pdf
    • http://mountainzonewaterpolo.com/uploads/1/3/0/5/130543261/xasekij_vujafiwezod.pdf
    • https://zegafizikob.weebly.com/uploads/1/3/0/5/130589295/587b0cc.pdf
    • http://taorinjapan.com/uploads/1/3/0/5/130551464/bokuzarela.pdf
    • http://beastedart.com/uploads/1/3/0/5/130551399/gowewelodeje.pdf
    • http://doublehranch.ca/uploads/1/3/0/6/130640094/5637449.pdf
    • http://djspizza1.com/uploads/1/3/0/7/130738996/130738996.html#english+conversation+speaking+practice+for+android

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001350.bin
992b51a022960d8a4b3304bff62505816c7807b1d0d372c5c16bfc679f4e2f00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1350 8048 bytes
font_01_sfnt_off00006ab7.bin
c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB7 16092 bytes

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