PDF malware analysis — malicious · 08090478ac1a0628

MALICIOUS

PDF

75.6 KB Created: 2021-03-30 11:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3ffac08f059700e6cb6679a74802815f SHA-1: a6304e4c58d41e6243f58279525ae8b168b3fd5e SHA-256: 08090478ac1a06282e953c5a33923ced545af6709ffdc0baa6e87276f9936ee2

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'vilenefex.ru', which is suspicious and likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to appliance maintenance, a common tactic for social engineering.

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://vilenefex.ru/strik?utm_term=how+to+clean+filter+in+whirlpool+dishwasher
- https://static.s123-cdn-static.com/uploads/4376619/normal_5fd05f5c841c7.pdf
- https://ginekimef.weebly.com/uploads/1/3/0/7/130738874/6886270.pdf
- http://helpcreditscore.info/duromax_generator_12000ewvyls.pdf
- https://visizejafu.weebly.com/uploads/1/3/6/0/136093068/3707090.pdf
- http://cardioactiveuficiale.site/how_deep_and_wide_is_gods_love_bible_versegw91z.pdf
- https://static.s123-cdn-static.com/uploads/4366042/normal_60030070bf09a.pdf
- http://copyrightshelpcenter.com/rustom_full_movie_download_movies_counter35nii.pdf
- https://cdn-cms.f-static.net/uploads/4482860/normal_5fd9a92fd65cd.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lixasifasi/fipadiwa.pdf
- https://s3.amazonaws.com/wetevali/samsung_dw80j3020us_instruction_manual.pdf
- https://s3.amazonaws.com/pugomonapoxuxe/tales_of_xillia_trophy_guide.pdf
- https://s3.amazonaws.com/tezofuretejom/bunco_rules_and_score_sheets.pdf
- https://s3.amazonaws.com/doxifuba/65180129883.pdf
- https://s3.amazonaws.com/zabevog/zuzom.pdf
- http://xiromenabagagi.rf.gd/bosch_tronic_3000t_installation.pdf
- https://s3.amazonaws.com/jovekus/fractions_of_quantities_worksheet_year_3.pdf
- http://vudemiziwifimo.epizy.com/precalculus_word_problems_worksheet.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_off0000eaf3.bin` `62d4f08f0354793b57072174ec2c144f222e93b7c45e27f8ddf8f8660781a2ff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAF3	5296 bytes
`font_01_sfnt_off0000fd05.bin` `fbed4360844b63d5022097aa73dafee90d566f531e356ad60d6525ac08283f57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD05	10628 bytes

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