PDF malware analysis — malicious · bae4be71dfb2c394

MALICIOUS

PDF

69.2 KB Created: 2020-12-28 10:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8054c601d450f8f862ad1a69df77a26d SHA-1: 1be45ed87f5b1e44c59bdcfbe93338043da71d04 SHA-256: bae4be71dfb2c394e8fd7d51fe3bc5e0c498377015270034f75df8e3ca8b166c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'trafficel.ru', which is likely a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious external resource, consistent with spearphishing tactics.

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://trafficel.ru/123?utm_term=the+grown+up+chocolate+company+ltd
- https://cdn.sqhk.co/guxuboru/4iiifmv/clock_face_image_generator.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/xedewofuretujo/star_trek_online_ship_guide.pdf
- https://s3.amazonaws.com/bepukuba/ronow.pdf
- https://uploads.strikinglycdn.com/files/acf36e86-17de-4047-a91f-176d0155bdd0/wagozewuf.pdf
- https://uploads.strikinglycdn.com/files/e7d6786e-a9ac-458d-9f48-a4242d241ea5/80920098468.pdf
- https://s3.amazonaws.com/gajabedafot/kasej.pdf
- https://s3.amazonaws.com/nopomewegobij/risebitulusafolotafe.pdf
- https://s3.amazonaws.com/vokeri/90876092178.pdf
- https://uploads.strikinglycdn.com/files/22cc3d3b-4dd0-42f5-90d8-5ff9a681a711/watch_midsommar_free_online_123.pdf
- https://s3.amazonaws.com/tuxutedi/schengen_visa_online_application_form_france.pdf
- https://s3.amazonaws.com/wujodibu/job_interview_tips_questions_and_answers.pdf
- https://s3.amazonaws.com/tuxutedi/all_guitar_chords_finger_placement.pdf
- https://uploads.strikinglycdn.com/files/2bf18b11-0f44-48e2-91d0-b28837c86fce/help_the_beatles_ringtones_free.pdf
- https://s3.amazonaws.com/tumasun/brazilian_wax_prices_european_wax.pdf
- https://s3.amazonaws.com/mikibetiv/revo_uninstaller_full.pdf
- https://uploads.strikinglycdn.com/files/bbf0f294-4732-49c7-848e-8ae42c91568e/how_to_download_episodes_from_123mov.pdf
- https://s3.amazonaws.com/dugibabafod/bus_routes_london_map.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_off0000ccba.bin` `bc541e2b7e413d1eea8b4f8638decfe295cc0553e743ac28df1ecc372d7e651c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCCBA	5452 bytes
`font_01_sfnt_off0000df34.bin` `b456caa990ca36d6e81fe59ab8c87ed8f1e8d8e4f9d904f242e411a209e93113`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF34	11772 bytes

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