PDF malware analysis — malicious · f483a20b39810ec7

MALICIOUS

PDF

82.6 KB Created: 2021-03-26 13:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b346697c1791d09ca6ae145e49218c13 SHA-1: ea273f101368ba3a148e18824baaff1d7f8df423 SHA-256: f483a20b39810ec74002b898203dfc196e3acf1265d9db22d1102d157de9b23a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which is identified as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'Native american signs and meanings' to entice users to click the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://dafemum.ru/strik?utm_term=native+american+signs+and+meanings
- https://cdn.sqhk.co/balaragu/hmgfU7k/gojalojesejuvivupoma.pdf
- http://tijudiwulewanuw.getenjoyment.net/35265298891.pdf
- https://cdn.sqhk.co/nudogada/Xhdhhgd/brawl_stars_box_opening_download.pdf
- https://cdn.sqhk.co/nejibija/ds9hdhh/jarurizazuri.pdf
- https://cdn.sqhk.co/wupofolizaj/e7jhMwY/25306088243.pdf
- http://tezoxefakalexo.sportsontheweb.net/66498419354.pdf
- http://zixaxagewan.mypressonline.com/how_to_connect_bluetooth_on_pioneer_mixtrax.pdf
- https://cdn.sqhk.co/vasibejovej/hexJ4jL/4695857370.pdf
- https://cdn.sqhk.co/bogovureg/npXgitG/kotusefubuvupos.pdf
- https://cdn.sqhk.co/bagekaketox/hcjfxhe/fafatuxe.pdf
- http://kawasus.scienceontheweb.net/what_type_of_charger_cable_for_kindle.pdf
- https://cdn.sqhk.co/xenudipu/Uyhbrid/jixeximitobemi.pdf
- https://cdn.sqhk.co/kidurukazag/Rhcgf7a/kezowekexogumepulefiluz.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://givosike.rf.gd/sandvik_cutting_tools_catalogue.pdf
- http://gaxilitexu.onlinewebshop.net/68009882440.pdf
- http://xawazemekize.epizy.com/application_for_return_of_original_documents_from_college.pdf
- http://rurebafib.onlinewebshop.net/fundamental_design_concepts_in_software_engineering.pdf
- http://vesijugi.epizy.com/the_forever_war_dexter_filkins_sparknotes.pdf
- http://literukijo.epizy.com/quell_user_manual.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010540.bin` `b0fa2108aa64ad7f842bec5a47e96fbdf50de877676c6208262952928361096f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10540	5256 bytes
`font_01_sfnt_off00011715.bin` `ba56289392c7995c24bf08c82698ab68b75894ff9ecec49bb20678ecb9540bc3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11715	11228 bytes

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