PDF malware analysis — malicious · d55c1b392ba1715e

MALICIOUS

PDF

50.9 KB Created: 2021-09-23 14:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 7288839e48336a231427a312d2241907 SHA-1: bd14a43821b70f0f4f8b352c1fbe991dfb84be56 SHA-256: d55c1b392ba1715e8f6ca0b7cda247c6b6e48815860f2579d2852088d32eb3f7

132 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ClamAV detection and ML classifier further support its malicious nature.

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://inwebjor.ru/uplcv?utm_term=war+of+zombie+apk
- http://w3-japan.com/js/upload/files/tawipabe.pdf
- http://patrickstaxi.fr/userfiles/file/najikoguxuwazogon.pdf
- http://thestarbusan.com/FileData/ckfinder/files/20210902_4EB1E1D352E0019A.pdf
- https://jahanchart.ir/data/files/file/96631642134.pdf
- http://aotwresort.net/ckfinder/userfiles/files/73555436879.pdf
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613bef06c09b3---52159318332.pdf
- https://chulintemple.org/CKEdit/upload/files/91227559115.pdf
- http://sriraghavendratemple.com/ckfinder/userfiles/files/40159656940.pdf
- https://malmospelmanslag.se/userfiles/file/14040460094.pdf
- http://brlairport.com/images/file/86161088683.pdf
- https://thaiahpa.com/flash/files/bemes.pdf
- http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/57259618153.pdf
- http://jualumnitoronto.com/editor/uploadfiles/98261767972.pdf
- http://limeitec.com/upfiles/editor/files/lunepobobuvofobukav.pdf
- https://audit-advisers.com/userfiles/file/95620543456.pdf
- http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/77446098528.pdf
- https://happycolaborativo.com/uploads/files/73067419617.pdf
- https://digireg.org/upload/13982379599.pdf
- https://biroestarsa.hu/uploads/file/27031554950.pdf
- http://firesecurity.sk/userfiles/file/ralusedimitedadomu.pdf
- https://portofcrotone.com/dati/upload/file/xesopuvamevesopoxoda.pdf
- https://thebottombillion.com/business_school/uploads/file/4801204307.pdf
- http://progettogeometra.it/userfiles/files/tuxuzapu.pdf
- http://hitelesen.com/userfiles/file/48315111594.pdf
- http://themadthinker.com/temp/vinney/HTML/userfiles/file/buruledikimexali.pdf
- http://sdds.be/userfiles/file/dekevudogoxivu.pdf

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