PDF malware analysis — malicious · aa1b62ad78dc8b47

MALICIOUS

PDF

70.7 KB Created: 2021-03-13 16:33:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 19e041f22821b530ec2acc209766cc1e SHA-1: 7926068f2f4b77b3ececf1fb9e02e483553739cf SHA-256: aa1b62ad78dc8b471739849b2ee11a23aaa7bf1efc1655afe472e901b21f3c66

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, 'lozipotod.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to an 'answer key', further supporting a phishing or social engineering attack pattern.

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://lozipotod.ru/strik?utm_term=the+golden+kite+the+silver+wind+answer+key
- http://wutanumijejol.sportsontheweb.net/20187078986.pdf
- https://cdn.sqhk.co/gudijupimeb/b3ijicI/minecraft_pe_skyblock_seed_2020.pdf
- https://cdn.sqhk.co/fewibefanid/fihZjcD/20528180021.pdf
- http://vvvvvvvvvvvvvvvvvvvvvb.xyz/format_for_employment_certificateiu5oj.pdf
- https://cdn.sqhk.co/surekepuna/dghfBhe/gowevuk.pdf
- http://znohist.site/37316426274tq4yu.pdf
- http://bumaga.bz/novecento_baricco_englishyqhkj.pdf
- https://cdn.sqhk.co/damapegapi/gfgeyif/videoder_en_uptodown_com_android_old.pdf
- http://youla-24.cc/17783520577kcklp.pdf
- http://kadaxejob.mypressonline.com/9472958053.pdf
- http://shoop-ff.ru/8931293034814x6a.pdf
- http://smirno.life/apophatic_theologypc00q.pdf
- http://pokemonrivals.online/62925899707az6xz.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://14319df0-7947-4f0d-bbb3-eaa17d5eb23e.filesusr.com/ugd/c45f38_eb701481cb1b4f3fa4d8c8b027a7430d.pdf?index=true
- https://s3.amazonaws.com/xomudufe/2014_ford_escape_titanium_owners_manual.pdf
- https://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_40e22d5850c5415d8a9c0829570ba92d.pdf?index=true
- https://s3.amazonaws.com/zidosozawok/best_video_collage_maker_apk.pdf
- https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_d622a42c20a74f0aace54672481276a5.pdf?index=true
- 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_off0000d788.bin` `4f47cb4bbbecb1b5c750cc8cb7aee5825057bebe8c723b3fd856ddae011165f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD788	5352 bytes
`font_01_sfnt_off0000e9d3.bin` `6d7e8dfc65c92a80eff8bc70133a29cda4fb3d1f7fc5857a99a32e374c286f5a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9D3	10648 bytes

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