PDF malware analysis — malicious · 49eb4f4e2cb812bc

MALICIOUS

PDF

79.0 KB Created: 2021-04-17 11:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5d75727b8e67816c74405a8330772320 SHA-1: 39c80935fed9944063750456ad0a98a81c6b1ec8 SHA-256: 49eb4f4e2cb812bcda200ffbc9764a7efd1c100c9f2309c62d9cb8d3b004d9bb

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'jumiwimov.ru', which is likely a malicious domain used to host a secondary payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a book summary, aligning with phishing tactics.

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://jumiwimov.ru/strik?utm_term=change+by+design+book+summary
- http://tulomodev.getenjoyment.net/jogoralujen.pdf
- http://citrus-fruit.space/matplotlib_cheat_sheetqef3a.pdf
- http://lezigovedavide.getenjoyment.net/how_to_troubleshoot_water_heater.pdf
- http://tajumizigareni.iblogger.org/12577494286.pdf
- http://zoxodur.sportsontheweb.net/4557418092.pdf
- http://sukujemegamog.22web.org/task_priority_matrix_template.pdf
- http://rivilidopu.medianewsonline.com/zujunu.pdf
- http://liberum.sportsontheweb.net/viwekorixikop.pdf
- http://brettlockhart.com/9091292033oh81p.pdf
- http://tugokutuli.scienceontheweb.net/delarafubogimutobok.pdf
- http://store50off.info/418083111248w69u.pdf
- http://instapriz.website/nizeguzonopovilewofojas4iqdv.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://lipeporo.onlinewebshop.net/atomistique_et_liaison_chimique_l1.pdf
- http://nijarigu.onlinewebshop.net/calculus_formulas_download.pdf
- http://widifusi.myartsonline.com/gatabodumiboletaw.pdf
- http://vazuvipib.rf.gd/bedminster_down_school_uniform_policy.pdf
- http://tuwutexo.onlinewebshop.net/runugixuje.pdf
- http://gefilodeza.myartsonline.com/fizeza.pdf
- http://tojuributesef.epizy.com/officejet_pro_8600_printhead_missing_failed_or_incompatible.pdf
- http://pejemevogoge.myartsonline.com/harvard_business_school_case_study_method.pdf
- http://mukukukeban.rf.gd/12801762249.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_off0000f689.bin` `9763fb0490d73b5767cb986aa2065be46e619089d3ff0312693324045f6ac755`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF689	5416 bytes
`font_01_sfnt_off000108cb.bin` `c1babf812725fc54f56d7af2f85ebc7868bec5db1f68041c1c0c40077c2ee54d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108CB	11460 bytes

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