PDF malware analysis — malicious · 9058bf6580616e83

MALICIOUS

PDF

80.8 KB Created: 2021-05-06 23:02:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 312c1925ff9f4cee31a789644afb7e1d SHA-1: d4bae9030c231c2ffaa7543a48c7c794f575ce14 SHA-256: 9058bf6580616e83e7d037d783d7da5fa53fd970d3f742397c6fb9a8fd0aa5f4

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous external URLs pointing to other PDF documents, likely to manipulate search engine results or distribute further malware. The primary URL observed is 'https://xezojetit.ru/strik?utm_term=rose+then+and+now+bible+maps'.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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=rose+then+and+now+bible+maps PDF link annotation
- http://bt-management.website/birewuluqvvsu.pdfIn PDF document text
- https://cdn.sqhk.co/xeduwukaxusa/dL6hagi/transformers_earth_wars_deeplink_codes_2019.pdfIn PDF document text
- https://cdn.sqhk.co/kubepugemaki/C4tfjgH/virtual_villagers_origins_2_crafting_steam.pdfIn PDF document text
- https://cdn.sqhk.co/wevafofed/haibggd/mad_zombies_zombie_shooting_offline_game.pdfIn PDF document text
- http://prodit.space/lynette_buschbacher_military_historianzq46x.pdfIn PDF document text
- https://cdn.sqhk.co/webunojixisa/gccOngi/kathi_villain_bgm_ringtone.pdfIn PDF document text
- https://cdn.sqhk.co/mifodirula/aCjg3ia/camera_360_apk_mod.pdfIn PDF document text
- http://leomannapov.com/resusuzakonudujefavoselaptj0b4.pdfIn PDF document text
- http://helplnstagramcontact6088758.com/70644341117rncox.pdfIn PDF document text
- https://cdn.sqhk.co/muvotugi/jahjQLP/crossword_clue_example_model.pdfIn PDF document text
- http://xokubenafap.66ghz.com/37365675980.pdfIn PDF document text
- https://cdn.sqhk.co/mujexoxa/EAhcijQ/21474927762.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_470efbc69bb948c5a6d1689f3b423a37.pdf?index=trueIn PDF document text
- https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_dbe68fd5f23845ea8840ab99d28d56e2.pdf?index=trueIn PDF document text
- https://56076a71-1b70-41e8-afe1-d547c394b4ee.filesusr.com/ugd/ab0d05_67f8356ecaff4aa3ab5cf23a09a4f620.pdf?index=trueIn PDF document text
- https://5366dd3f-28a3-4342-b8e5-5bed86455aec.filesusr.com/ugd/a92322_c936b33bc8e94d2a8b2050e83c668128.pdf?index=trueIn PDF document text
- http://nikibulafejew.rf.gd/the_glass_bead_game_audiobook.pdfIn PDF document text
- http://xovojiga.epizy.com/epdm_sheet_rubber_material.pdfIn PDF document text
- https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_efbeac5a337d4907b9f90b88bf7fad5d.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec70.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC70	5128 bytes
SHA-256: `cc5fb53392da3199b3f3be61edacf26241fc0affbddfc4e057972df5ee644874`
`font_01_sfnt_off0000fdc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDC1	11868 bytes
SHA-256: `48f5fcc10c381ff8d6fe1c4d2c1b8c3a10dea8567651385c1588751155a89c59`
`font_02_sfnt_off0001262b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1262B	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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