Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abfdb0add51142d…

MALICIOUS

PDF

50.1 KB Created: 2021-10-07 13:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: bca11dbf770aa3564e6771461a85f0b6 SHA-1: 85b86667c044226502bb50d5f3bf9efbf8f44433 SHA-256: 6abfdb0add51142d46246b1d7b41891944c5872ec22d9fbc3940a70a47310fdc
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and it contains embedded JavaScript. The PDF also features a large number of external URLs, many of which appear to be part of a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection or execution of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 https://cructi.ru/uplcv?utm_term=american+bully+for+sale+in+ontario PDF link annotation
    • http://aptekadc.pl/userfiles/userfile/tatapegatazomekik.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/17283164471.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/fugikolobi.pdfIn PDF document text
    • http://cartonwrappingmachine.com/userfiles/file/30484363531.pdfIn PDF document text
    • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/sujar.pdfIn PDF document text
    • http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/56635160467.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/fk88df5htr42kr7ln0dnslu297/lovukewovuriwirataroz.pdfIn PDF document text
    • http://efeteknikyapi.com/userfiles/files/17943540096.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/71443740866.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/41482998629.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/fimorogumerizebevagexino.pdfIn PDF document text
    • http://studioassociatoemc.com/userfiles/files/poditavuk.pdfIn PDF document text
    • http://yuha.be/_files/file/pukejuwitenirodul.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e9ee80c17e---42399391509.pdfIn PDF document text
    • http://xinnethk.com/userfiles/file/bupijakararivusafirogi.pdfIn PDF document text
    • http://koppeika.ru/userfiles/file/pinopinisonavizel.pdfIn PDF document text
    • https://nichebearing.leaddeehub.com/userfiles/files/98242091501.pdfIn PDF document text
    • https://farmacieitaliane.com/documenti/file/loverowadajisumo.pdfIn PDF document text
    • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/9784547365.pdfIn PDF document text
    • http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/davaruwitozisezozobumebe.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/33649394426.pdfIn PDF document text
    • http://galettedesrois.hu/userfiles/file/roseroturugipeg.pdfIn PDF document text
    • https://fpcofmacon.com/nbloom/fckuploads/file/finezimevidono.pdfIn PDF document text
    • http://onsijsselstein.nl/userfiles/files/19669100006.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/ponajufoj.pdfIn PDF document text
    • https://www.thc.gda.pl/ckfinder/userfiles/files/21972162875.pdfIn PDF document text

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