PDF malware analysis — malicious · 3f1d76ba57e64479

MALICIOUS

PDF

72.8 KB Created: 2020-12-14 03:19:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 7c94deae31303e177395ed7bc94e2fb5 SHA-1: d06ded3d3a4be51cd88f4e45b67d8f05773b246c SHA-256: 3f1d76ba57e64479a61a85b9f4fee00af5dd83029474807a1e18aa04c9be63f5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/strik?utm_term=carrier+air+conditioner+remote+control PDF link annotation
- https://cdn-cms.f-static.net/uploads/4455176/normal_5fc0b54626a11.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419626/normal_5fc7d14778acd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405950/normal_5fbc981ce3685.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478928/normal_5fc030602019d.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/vuzufexarevima/naboroguranubewujolafa.pdfIn PDF document text
- https://s3.amazonaws.com/lopazura/parorekomesuwi.pdfIn PDF document text
- https://s3.amazonaws.com/nagev/maximo_asset_management_7._6.pdfIn PDF document text
- https://s3.amazonaws.com/davolazupivowi/25080086816.pdfIn PDF document text
- https://s3.amazonaws.com/dofufiri/43173973839.pdfIn PDF document text
- https://s3.amazonaws.com/dinilederu/free_spider_man_movie_online.pdfIn PDF document text
- https://s3.amazonaws.com/dujepav/raxiluvimizedikafunamam.pdfIn PDF document text
- https://s3.amazonaws.com/gagagakigibapo/72258691249.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_off0000e19f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE19F	4812 bytes
SHA-256: `f2a4982cdf8ab2d259c13c95ca7f256c91210a83dcb7f6c0da7e647c00a37474`
`font_01_sfnt_off0000f1dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1DC	10764 bytes
SHA-256: `d3d3fefc3414bfe0b18d22a3f1ff8f9c6e203d94d8d5fb64f3844bc6370bb520`

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