PDF malware analysis — malicious · 903c1ae602ff22fd

MALICIOUS

PDF

78.8 KB Created: 2021-04-03 07:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: a98bc297fe0a70ececf210845d359303 SHA-1: e6cd947d5bbf01f4587976cd40ef30c5e0c10fb9 SHA-256: 903c1ae602ff22fdbdf121b4f3589ad629edd10914563b0eb5ff8a0e8b3e1c0e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an external URI pointing to 'resalured.ru', which is likely part of the attack chain. The document body, though heavily obfuscated, suggests a legal context, which is a common lure for phishing attacks. No scripts were extracted, but the presence of external links and the overall detection profile strongly suggest malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://resalured.ru/wix?keyword=answer+to+interpleader+complaint+california PDF link annotation
- https://cdn.sqhk.co/tizudukokeni/lJshajc/basketball_arcade_machine_for_rent_philippines.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415322/normal_606217c2c755a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445558/normal_5ff9b4e80d265.pdfIn PDF document text
- https://webegerux.weebly.com/uploads/1/3/4/7/134759049/91e073ae11b76.pdfIn PDF document text
- https://wusedutewaxugag.weebly.com/uploads/1/3/1/4/131437839/roxaxupigelo-nixalonu.pdfIn PDF document text
- https://cdn.sqhk.co/taxeseta/fKGgizz/supitosawujelew.pdfIn PDF document text
- https://cdn.sqhk.co/budatumibowu/ibigQih/boss_katana_50_amp_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478402/normal_600e614936760.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463803/normal_6043e2ee1dc92.pdfIn PDF document text
- http://faxozulakevosos.iblogger.org/simosarowuv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374360/normal_5fd356d0513f9.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://uploads.strikinglycdn.com/files/a3de9e66-529f-4214-9845-6bb8640da452/58300401670.pdfIn PDF document text
- http://wefazor.epizy.com/8232001185.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bf7cba34-7df3-497c-94ab-90296dec8f13/swat_model_training_courses_2019.pdfIn PDF document text
- https://s3.amazonaws.com/kosamupim/repabekugowoz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b0b33e6-bdfa-42b3-999f-66499f435fdc/common_linux_terminal_commands.pdfIn PDF document text
- http://zusobowes.rf.gd/football_game_free_for_windows_xp.pdfIn PDF document text
- https://s3.amazonaws.com/jefobexapulow/do_stoves_still_have_pilot_lights.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/aa3bd2ea-b645-4920-8883-7d3491dc438c/what_is_the_best_chess_clock_app_for_android.pdfIn PDF document text
- https://s3.amazonaws.com/kexamoxusinixu/jomozubogab.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e75a2f21-40cb-4872-838d-e50f1acca885/75491722812.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e6fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6FA	5172 bytes
SHA-256: `16162ea4c23170956502f7e7a6fbb81adb7cbe762ea093cbaaca21ccd9ac3132`
`font_01_sfnt_off0000f878.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF878	11368 bytes
SHA-256: `7e09cda56c2395da0e3c6042778bde21a695044d352a8e4e95c9f24c42db8e66`
`font_02_sfnt_off00011f01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F01	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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