PDF malware analysis — malicious · 73b654d39e69f1a2

MALICIOUS

PDF

75.8 KB Created: 2021-04-25 00:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 78b40c1f492b19d8f7677e760c589548 SHA-1: 583bb7acba4344215c7c55c406f3c2ec5ea94967 SHA-256: 73b654d39e69f1a2731edac58f054f0f80c0ea9bff84cc5e7e7aeeb2c595e419

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://xezojetit.ru/strik', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to contain metadata related to 'wkhtmltopdf' and a title that might be used as a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=minister%2527s+cat+scrooge
- http://fartook.online/662549645617hvdc.pdf
- http://motivawka.online/11590696723q7dwl.pdf
- https://cdn-cms.f-static.net/uploads/4367275/normal_5fe808100f039.pdf
- https://static.s123-cdn-static.com/uploads/4422382/normal_5fcea3f70ba0c.pdf
- http://sweetygirl.club/sword_art_online_game_release_order0qssb.pdf
- http://usejus.club/what_is_the_best_wireless_ps4_headset8527s.pdf
- http://freedate18.xyz/life_fitness_95te_treadmill_price3ea5i.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://zukuwegafedes.epizy.com/what_is_the_salary_of_bba_in_india.pdf
- http://nototen.epizy.com/angle_finder_camera_app_android.pdf
- https://s3.amazonaws.com/jazofi/what_are_the_symbols_on_pokemon_cards.pdf
- https://s3.amazonaws.com/zukogi/what_are_good_vegetarian_sources_of_protein.pdf
- https://s3.amazonaws.com/fojaxexino/ctet_answer_key_paper_1_set_s.pdf
- https://s3.amazonaws.com/mawesenasijoser/multiplying_decimals_free_worksheets.pdf
- https://s3.amazonaws.com/busutafitufe/lancashire_witches_walk_guide.pdf
- https://s3.amazonaws.com/rejiner/naboleweganew.pdf
- https://s3.amazonaws.com/xopugup/wuzididadumawofefobuwidov.pdf
- https://s3.amazonaws.com/divexikav/html_hidden_form_auto_submit.pdf
- https://s3.amazonaws.com/gazivemon/wibosibemufesiterenune.pdf
- https://s3.amazonaws.com/fuvidokibet/veluwaretelin.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_off0000ec33.bin` `bf5f1020724c68aa19c974b8578ad40680d34efe7ee3c36b74f3871bb41cd549`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC33	4976 bytes
`font_01_sfnt_off0000fd3f.bin` `3a9a7186cc1a875afb462bbe1a5d5d6a257793bfd55d8ac2aceb61b9de6eb02a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD3F	11028 bytes

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