Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9507eeee47f3a1…

MALICIOUS

PDF

48.6 KB Authoring application: PDF Studio
MD5: 6e9188c8150ee64152efbc4b8e1df32c SHA-1: 40483b1480783c3dc9e469f7ff7b3574193ee2dd SHA-256: 6f9507eeee47f3a18f981cfa195ea0ab85814bcbb0dbddc44452bdf364a8cdff
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDF files, a technique often used to distribute malware or phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content hosted on external domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://thetranquilgoat.com/uploads/1/3/0/7/130776023/5ef1cc779db8.pdf
    • http://4444ever.com/uploads/1/3/0/6/130640048/7d632df3.pdf
    • http://knoxvilleangels.org/uploads/1/3/0/8/130874148/poditepepa.pdf
    • http://iquiver.net/uploads/1/3/0/5/130541743/depowadazamupolonoze.pdf
    • http://independentadultcarehomeassociation.com/uploads/1/3/0/6/130622049/4628568.pdf
    • http://martinvizzina.com/uploads/1/3/0/6/130620402/82019d6a70.pdf
    • http://mapamls.com/uploads/1/3/0/6/130639531/nekawepota.pdf
    • http://charliemcmanus.com/uploads/1/3/0/3/130313590/vozose.pdf
    • http://spirituallyyou.life/uploads/1/3/0/2/130287923/zowonawijot_zurerukobu_bixogapirovos.pdf
    • http://oldmexico.info/uploads/1/3/0/7/130739535/4910314.pdf
    • http://mkcpac.net/uploads/1/3/0/7/130776076/8726246.pdf
    • http://nysaafg.org/uploads/1/3/0/6/130621066/muxajex.pdf
    • http://tylerdsmith.org/uploads/1/3/0/6/130620482/430684.pdf
    • http://stopgossipping.com/uploads/1/3/0/2/130289406/faluta.pdf
    • http://chunkeymonkey40.com/uploads/1/3/0/6/130604300/5826671.pdf
    • http://adventuresbyprice.com/uploads/1/3/0/6/130639911/1d821c5ab510.pdf
    • http://74-123-76-212.mgwnet.com/uploads/1/3/0/2/130274355/130274355.html#high+amylase+test

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000e95.bin
53f5b64b40a491f8bfd51d036556e91989a0c6c7b2fb5ba90edea61cd3727fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE95 8132 bytes

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