PDF malware analysis — malicious · 76338b7729dab815

MALICIOUS

PDF

79.4 KB Created: 2021-03-07 19:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aa3fb67b4481c523b5fee09bc4ff444e SHA-1: 78fd1f461d9c0a6fd986139bba231cb22ff55ed4 SHA-256: 76338b7729dab8155f5fabae27d17030ee1b6d202ff304c80d9140ed3e677c6a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that masquerades as a search result, likely to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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/123?utm_term=data+structures+using+c%252B%252B+programs+examples
- http://hookup671.site/mebujuwefironovefuwogeg7d2ln.pdf
- http://modernstyle.pro/enfoque_conductista_en_la_educacionagakb.pdf
- http://rokonagusedat.22web.org/h2so3_strong_or_weak_base.pdf
- http://zuvinesewuwiz.iblogger.org/xesumurerobokizikixake.pdf
- http://cooldomen.space/sample_of_a_simple_literature_review62drs.pdf
- http://retakajuzupix.22web.org/blurryface_album_songs.pdf
- https://cdn.sqhk.co/vekuperik/49Ek71U/hyperion_launcher_pro_apk_cracked.pdf
- https://cdn.sqhk.co/demejapad/cejhidn/hidden_objects_christmas_holiday_puzzle_game.pdf
- https://cdn.sqhk.co/masamiwe/jgidoij/photo_gif_maker_video_apple_live.pdf
- https://cdn.sqhk.co/pesuxitum/jasiihj/pirate_treasures_gems_puzzle.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/dosalapasenow/24137546572.pdf
- http://nosijatigatu.epizy.com/dumoretujitugixagop.pdf
- http://dipomik.epizy.com/30442533252.pdf
- http://fuzadakeju.epizy.com/divabujobafodeboxubi.pdf
- http://sedijinuv.epizy.com/jomiwufag.pdf
- http://gifimedirawi.epizy.com/47963648116.pdf
- http://badokelo.rf.gd/java_jdk_mac_os_mojave.pdf
- https://s3.amazonaws.com/figidireki/advantages_of_balance_sheet_in_accounting.pdf
- https://s3.amazonaws.com/kefodek/10744589670.pdf
- https://s3.amazonaws.com/befafuni/viturinivaxegabokuvafe.pdf
- http://ravitog.rf.gd/how_to_calculate_power_dissipation.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_off0000f4ba.bin` `44f1a825a6b3c07a8fa457a1108f9811e2ff28c8e1e93c3a482c444c7ac0252c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4BA	5320 bytes
`font_01_sfnt_off000106cd.bin` `e5980fe1cde25f6d76d9bf3cbdb5fb6aef503ecdbbf77c2586987bb10168b36f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x106CD	12888 bytes

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