PDF malware analysis — malicious · a1b8fa0a4658cead

MALICIOUS

PDF

66.3 KB Created: 2021-01-07 22:17:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2fcbdc7718c6913b13af4299db35d772 SHA-1: 457aebacc6b1d0f8e8f489f1f3b17ddd2cf73f8d SHA-256: a1b8fa0a4658cead8646f56fece6fc38b2ee0ed6f4e9633c4e56bfcd821fae04

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a domain known for hosting malicious content, disguised with a seemingly legitimate filename. The document body, though heavily obfuscated, appears to be related to the URL's disguise.

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://traffset.ru/aws?utm_term=boekel+digital+dry+bath+incubator+manual PDF link annotation
- https://cdn.sqhk.co/gofelaxes/fjaHIjG/cat_gold_run_game_download.pdfIn PDF document text
- https://cdn.sqhk.co/sovokeduseb/akggijf/cooking_games_for_pc_free_download.pdfIn PDF document text
- https://cdn.sqhk.co/dodamewope/eAjiBij/lonariza.pdfIn PDF document text
- https://cdn.sqhk.co/lakuziwi/idVgcqT/81599002068.pdfIn PDF document text
- https://cdn.sqhk.co/joduragenep/5Gihhso/football_games_free_kick_world_cup.pdfIn PDF document text
- https://cdn.sqhk.co/xefijumu/iggdoii/62932916306.pdfIn PDF document text
- https://cdn.sqhk.co/zetanitanedo/ShjltsV/crazy_taxi_3_xbox.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dojonuta/zatexumomo.pdfIn PDF document text
- https://s3.amazonaws.com/takateg/90016281978.pdfIn PDF document text
- https://s3.amazonaws.com/bejenosugede/free_daily_weekly_planner_templates.pdfIn PDF document text
- https://s3.amazonaws.com/vitelitubovuluj/currys_compact_dishwasher_manual.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/origins_of_american_government_section_1_answers.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c592.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC592	5528 bytes
SHA-256: `7e8af0ef4ab1b6df52c347dd2eedec83865873baf079735fea9451d218f07a7c`
`font_01_sfnt_off0000d84b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD84B	10608 bytes
SHA-256: `3998ddf8ef9de23d34b14755de99ae10dc94719268463a2edbc185bed8a5da6e`

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