PDF malware analysis — malicious · d5cf868b77a5ef8b

MALICIOUS

PDF

62.1 KB Created: 2021-01-06 13:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: b5f400c29f969db4d132366f4fa50769 SHA-1: 3698536667091b1f3208287472a6374fc9a63e36 SHA-256: d5cf868b77a5ef8b0507eebaf8c8086fbc12091274145d2aa9271d8c87d8ecd5

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 0.9996

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://trafftec.ru/aws?utm_term=workers+rights+practice+worksheet PDF link annotation
- https://static.s123-cdn-static.com/uploads/4479904/normal_5fe3466381172.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426813/normal_5faac064a2d5d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464082/normal_5fd836254fd96.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494160/normal_5fe700368b6b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421360/normal_5f9a9c595a509.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380523/normal_5fdfb1bae14f6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469640/normal_5fe7c3987f94b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4457848/normal_5fec91c8d6731.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454982/normal_5fa808502684d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485578/normal_5fdb522db66ba.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/bokexizometun/minecraft_command_block_fog.pdfIn PDF document text
- https://s3.amazonaws.com/bifadiwuwileji/bendy_and_ink_machine_chapter_4.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_off0000b5dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB5DC	5332 bytes
SHA-256: `08dc80a8b61387e969a80f95d4ea3c3388d7195cda07d0b32efd0569f3cd92be`
`font_01_sfnt_off0000c817.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC817	10560 bytes
SHA-256: `fefbec8885d564e6d44bff6475347637cf2358bf305a7956cd1cb946192da82b`

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