Malicious PDF — malware analysis report

Static analysis result for SHA-256 efeaa7e1542ea58a…

MALICIOUS

PDF

41.0 KB Authoring application: Smallpdf Desktop
MD5: 08cb54c7057d67611af7a789e342588a SHA-1: 19023798f6be40f22c44dafc4ed4263ccbb46195 SHA-256: efeaa7e1542ea58a764244aa8af68a707bc75d83130fcfac922918a7d57b3f3d
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classified as Pdf.Phishing.TtraffRobotInstall. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of outbound links suggests a coordinated effort to direct users to potentially harmful content or manipulate search engine rankings. No scripts were extracted from this sample.

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://mail.linedriveindoorbaseball.com/uploads/1/3/0/7/130775106/e4239.pdf
    • http://abqroofs.com/uploads/1/3/0/6/130620968/radopojegoje.pdf
    • http://burkedefenselaw.net/uploads/1/3/0/5/130590671/jabatupaguverivojeso.pdf
    • http://digitalsugar.net/uploads/1/3/0/3/130323594/gepuperefi-rolediki-mixidalowuza-sopuguvuxadonal.pdf
    • http://imagesofcleveland.com/uploads/1/3/0/6/130604054/5445410.pdf
    • http://chaoyue.life/uploads/1/3/0/7/130775819/4886865.pdf
    • http://mercertruckaccessories.ca/uploads/1/3/0/6/130605421/100b998cba296.pdf
    • http://remisesugartepremium.com/uploads/1/3/0/7/130775393/16761a060bcc.pdf
    • http://sincerely-amber.com/uploads/1/3/0/2/130271159/444654.pdf
    • http://babyfreebies2020.com/uploads/1/3/0/7/130739831/a182491.pdf
    • http://westpalmbeachwarehouse.com/uploads/1/3/0/2/130291539/5631156.pdf
    • http://advanceadvocacyandsupport.com/uploads/1/3/0/5/130539295/a2045323a22a.pdf
    • http://tahoenaturecenter.com/uploads/1/3/0/4/130476417/109532.pdf
    • http://risesportscast.com/uploads/1/3/0/5/130588861/jidoseramedukumej.pdf
    • http://7soundenergy.com/uploads/1/3/0/6/130620857/bogesazasutij-xofufi-tetevavoba.pdf
    • http://myflorapops.com/uploads/1/3/0/4/130476940/rawaxu_xebokaxe.pdf
    • http://encountermedicalgroup.com/uploads/1/3/0/7/130776374/ruvip-dalopazog-godamudu.pdf
    • http://caringbrandondentist.com/uploads/1/3/0/6/130620576/f3e9bf336cdb0f.pdf
    • http://khushalishah.net/uploads/1/3/0/6/130604589/3941699.pdf
    • http://drallison.com/uploads/1/3/0/8/130813921/rokerozi.pdf
    • http://victoryhealthcarepartners.com/uploads/1/3/0/4/130476556/gukiwobisowovizewik.pdf
    • http://www.atrfootwear.com/uploads/1/3/0/3/130313422/418281.pdf
    • http://www.richard-martinez-realtor.com/uploads/1/3/0/4/130483273/130483273.html#free+acls+algorithms+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c29.bin
8384806eb76489832f22882ede36a207c9fd911e0d719094a8bb7309286460fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C29 9032 bytes

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