PDF malware analysis — malicious · 876bf690c53d0fff

MALICIOUS

PDF

61.8 KB Created: 2020-12-01 22:40:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 2fb78ca86a43c5feb32f4783d0d424dc SHA-1: d875a23af8cdee21aef922a8b8969e79f38f666e SHA-256: 876bf690c53d0fffb0a1c3264c24992443f7153c0a628b099ec9d3276f104128

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=ap+chemistry+chapter+4+reactions+in+aqueous+solution+answers PDF link annotation
- https://cdn-cms.f-static.net/uploads/4388157/normal_5f9c64ee07117.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416927/normal_5f95bc7b2db47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386365/normal_5f9d6ea2ca6f6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376362/normal_5f8d511338754.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413119/normal_5f9590592caea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459188/normal_5fa60ad182ce8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413735/normal_5f99f542aefaf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368767/normal_5fa787fb28eac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379035/normal_5f8af6a4956b7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tugumeb/navy_dive_manual.pdfIn PDF document text
- https://s3.amazonaws.com/tipikaxe/72943483810.pdfIn PDF document text
- https://s3.amazonaws.com/wozowuledij/are_re_are_song_pagalworld.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b3f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB3F0	5572 bytes
SHA-256: `6e51b19558502d8558568f5736f21cdf67a5a1b6678a95e7da0fcbe9a5804b30`
`font_01_sfnt_off0000c6db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC6DB	10128 bytes
SHA-256: `54b28be2c56d25692f6823271c242500bf97eeb82aac90329fe590d69ebfe489`

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