PDF malware analysis — malicious · cf5e04cbbcad4d73

MALICIOUS

PDF

65.9 KB Created: 2020-12-24 11:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: f7ae8308106a15bf1ae25e2a7e082db0 SHA-1: b7e8acf0106beecac137a301207bd2613daf643c SHA-256: cf5e04cbbcad4d737bf1e73ace199e25dcd68cff1e08761dd91ca159bf5ac698

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a 'mask scary horror game'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or downloader 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://traffking.ru/strik?utm_term=the+mask+scary+horror+game PDF link annotation
- https://static.s123-cdn-static.com/uploads/4379387/normal_5fdf58b739584.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466996/normal_5fca0f1ac4068.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374840/normal_5fc8ed557bb94.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404308/normal_5fdb76f89a487.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446496/normal_5fa2d7f63ca62.pdfIn PDF document text
- https://cdn.sqhk.co/gototovubuwi/HchdMpk/awesome_pocket_rocket_piggy_bank.pdfIn PDF document text
- https://nosisakapu.weebly.com/uploads/1/3/4/7/134773138/juzute.pdfIn PDF document text
- https://pesegoniz.weebly.com/uploads/1/3/4/4/134497823/3512052.pdfIn PDF document text
- https://ragulifogikub.weebly.com/uploads/1/3/3/9/133986704/9214064.pdfIn PDF document text
- https://cdn.sqhk.co/juputufom/ciahhgj/wurufeguvelada.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/fasanag/ramasalad.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_off0000c513.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC513	5296 bytes
SHA-256: `3ff999606e7af28eb4d21360237d1e7f49cc7525696489bd67d4bdd0b3796c03`
`font_01_sfnt_off0000d6f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6F1	10448 bytes
SHA-256: `1a705f0952572962fddc3c71e737812dcdd79a0f93e3f6acf56c270da3ca59b5`

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