PDF malware analysis — malicious · 96cbb7bf87b73a53

MALICIOUS

PDF

65.4 KB Created: 2020-12-25 18:18:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: 0f40a5bcbd5b4696ec9551de803dc109 SHA-1: 77950300e2973c9a810964c2446b070d7eb5201b SHA-256: 96cbb7bf87b73a537af199fc0d86b14a0c9fc22b8fd89c2a5c752c2cb5c995ba

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for an embedded URI pointing to a suspicious domain, and the ClamAV detection confirms its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'Zombie strike heroes tier list' to entice users to click the malicious URL. No scripts were extracted, but the presence of an external URI and the ML classifier output strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=zombie+strike+heroes+tier+list PDF link annotation
- https://static.s123-cdn-static.com/uploads/4369310/normal_5fc601861f4f2.pdfIn PDF document text
- https://doxugibako.weebly.com/uploads/1/3/0/7/130776338/27bc5810f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454984/normal_5fa39b0061e36.pdfIn PDF document text
- https://cdn.sqhk.co/wiluxuko/hhjf43l/color_palette_from_image_generator.pdfIn PDF document text
- https://cdn.sqhk.co/jajotulix/bichdij/modozomajilikuwil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365608/normal_5f86f8d7c93fe.pdfIn PDF document text
- https://cdn.sqhk.co/revikokelobu/cAijejb/guzog.pdfIn PDF document text
- https://garusase.weebly.com/uploads/1/3/4/6/134634063/lezisenisonesamulife.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393364/normal_5fd3d07bdd749.pdfIn PDF document text
- https://cdn.sqhk.co/xetasenuwoji/hbMAhal/action_heroine_cheer_fruits_anidb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c4be.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4BE	4876 bytes
SHA-256: `0c970117c7233dbd0a872c620f568febad72ddb4034808c87270737be1503e49`
`font_01_sfnt_off0000d52b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD52B	10524 bytes
SHA-256: `78efdb3c106e97b22314c02947c36f592970379ca6d8964992cea5fd8ef1a29b`

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