Malicious PDF — malware analysis report

Static analysis result for SHA-256 198b645223f29b72…

MALICIOUS

PDF

41.4 KB Authoring application: PDFedit
MD5: e7d13a8773a56a37878ec7e04f9f959f SHA-1: 8b1bdf35f084a6a3a9e7461aa31a19487b289416 SHA-256: 198b645223f29b720a2ffbb786d9443f12933ffeb01f54906be029d2417beddb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of linked PDFs suggests a coordinated effort to redirect users.

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://hellomilesandpace.com/uploads/1/3/0/2/130289485/dukudisasar.pdf
    • http://mhwilleke.net/uploads/1/3/0/6/130620619/4f5c3b97ca1d6a.pdf
    • http://moanalipopo.com/uploads/1/3/0/5/130541211/teselewusumog-jijoduxoj.pdf
    • http://pinneo.net/uploads/1/3/0/6/130604737/napuj.pdf
    • http://xppost.com/uploads/1/3/0/2/130289232/jovekujajiz-vebazigunusa.pdf
    • http://patientfirstcareers.com/uploads/1/3/0/8/130874646/5526003.pdf
    • http://prismnpo.org/uploads/1/3/0/6/130603715/minalelike_toxokanevosipis_livuz.pdf
    • http://westwindcafe.com/uploads/1/3/0/2/130287845/fad2bf.pdf
    • http://nailwitchery.com/uploads/1/3/0/2/130292073/viloxatun.pdf
    • http://radjam.net/uploads/1/3/0/6/130639885/3252897.pdf
    • http://mirrorpayroll.net/uploads/1/3/0/6/130605036/a39f5.pdf
    • http://s3platform.org/uploads/1/3/0/6/130605505/5268415.pdf
    • http://sketchploration.com/uploads/1/3/0/8/130874519/kupunev.pdf
    • http://thesingbabysingshow.com/uploads/1/3/0/7/130740169/130740169.html#blender+low+poly+character+creation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049e2.bin
8e87a8c1e8e7235a06c6702304802a6c9dd8d8901a732c9858b0777cc11dac42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E2 7816 bytes

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