Malicious PDF — malware analysis report

Static analysis result for SHA-256 33589158845aae93…

MALICIOUS

PDF

48.0 KB Created: 2021-10-07 06:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 6f0a7830bfa793fae37ab22195937ff3 SHA-1: 1d012d79f99c2f9c6010d225413ce647a9ca07c4 SHA-256: 33589158845aae9381cf121d292fba0d0feecf4d1a4726592ae3be943492edd9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains, suggesting a link farm or redirection scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further indicates a pattern of using low-reputation hosting for these links. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest an intent to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8005

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://skpizzasubs.com/uploads/files/satarenuz.pdf In PDF document text
    • http://tuzy.pl/Upload/file/50239694419.pdfIn PDF document text
    • http://buren-kompanie.de/userfiles/files/48925805022.pdfIn PDF document text
    • http://pr-jam.com/ckfinder/userfiles/files/22459901222.pdfIn PDF document text
    • http://cbstav.cz/file/funugidisorupudujijin.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/44745413833.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/maron.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137596b3671a---vamewusubozigilejafoteg.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/xewonegexejirufugew.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/26899284964.pdfIn PDF document text
    • http://orthodoxnews.us/file/ripasiguwumerupavojeweb.pdfIn PDF document text
    • http://f1-rennsimulatoren.de/userfiles/file/98635022084.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/93744695378.pdfIn PDF document text
    • http://levakov132.ru/userfiles/file/gufetajeropipeb.pdfIn PDF document text
    • http://studiodispirito.it/userfiles/file/duwatamedadidezez.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/zaxosubusavi.pdfIn PDF document text
    • http://openendrep.com/userfiles/files/zigasilukubijus.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mebukuledisebib.pdfIn PDF document text
    • http://www.skk.com.hk/admin/ckfinder/userfiles/files/julil.pdfIn PDF document text
    • https://pointwebhost.com/calisma2/files/uploads/zemizidotesezoje.pdfIn PDF document text
    • https://fallahi-sch.com/userfiles/file/2850433198.pdfIn PDF document text
    • http://bukharaatlanta.com/sites/default/files/file/fatogid.pdfIn PDF document text
    • https://prawobrzeze.info/userfiles/file/17249383968.pdfIn PDF document text
    • https://philly.drinkpoint.com/uploads/files/31862229207.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=up+close+and+personal+1996PDF link annotation

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