PDF malware analysis — malicious · 19f0f42646afbd20

MALICIOUS

PDF

74.5 KB Created: 2021-03-13 17:54:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e763bc28bc3e570896a6e97dd9f3be76 SHA-1: d026293f9bfef1d82763de9480feb261bf9a11d7 SHA-256: 19f0f42646afbd20f880494e48a44de9f0c930d73c905b0432da51a9123444d0

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

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://nipisod.ru/award?keyword=beneficiary+deed+arizona+pdf
- http://tcerkovniekupola.space/2010_town_and_country_touring_value8hli2.pdf
- https://cdn-cms.f-static.net/uploads/4368488/normal_602a08f602bdc.pdf
- https://cdn-cms.f-static.net/uploads/4462726/normal_60446a19ad9fb.pdf
- http://linozelosezezis.22web.org/lochinvar_residential_gas_water_heater_reviews.pdf
- https://cdn-cms.f-static.net/uploads/4409799/normal_604b5435e4373.pdf
- http://miiliioner.xyz/72245024277m6ijh.pdf
- http://zikubuji.iblogger.org/ladujejareguxiworugexito.pdf
- https://cdn-cms.f-static.net/uploads/4413712/normal_6031e10b8cedb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/veraxawewib/73817639120.pdf
- https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_06c47cd9cecf4abfbd5249bf133a0b45.pdf?index=true
- http://jedirolin.rf.gd/9092214404.pdf
- https://161abad2-7de2-49bb-9904-d6e2a620a662.filesusr.com/ugd/2eec94_abdc1bf06a5742549b496b70b49aac3a.pdf?index=true
- https://s3.amazonaws.com/kovibu/lugufonojudivebizu.pdf
- http://burafidofa.epizy.com/65996049646.pdf
- http://libuninudavek.rf.gd/sony_x900f_review_cnet.pdf
- https://s3.amazonaws.com/jinabom/24605104707.pdf
- https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_73c38e8c1842444f95b8959016895b08.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_off0000e319.bin` `d8f3587d8926211d2dc7172b0da01818a493ca11f85b345d3a97963a50dd3c67`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE319	5140 bytes
`font_01_sfnt_off0000f4c0.bin` `6c7f4c3c99c687eed4867a7e401f04b25a6e95c62db999d8b8975a694c15707f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4C0	11204 bytes

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