PDF malware analysis — malicious · bc3b549af7c88481

MALICIOUS

PDF

67.8 KB Created: 2020-11-19 08:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 647317cbb54e78a4bb37b8075d613d79 SHA-1: b8d460785d52597c00d6b97eac15ba145553ad0e SHA-256: bc3b549af7c88481107a16ee4d9186599a0b6985b706c8aa73307aba9e69bc23

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution domain. The PDF structure also shows signs of manipulation with duplicate object bodies.

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://trafftec.ru/strik?utm_term=creepy+crawlers+oven PDF link annotation
- https://cdn-cms.f-static.net/uploads/4416791/normal_5faa306b02c5a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371791/normal_5faf5599b6d48.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371808/normal_5fa99ecdc8ff1.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/wuwabobujasivor/blink_xt_3_camera_system_manual.pdfIn PDF document text
- https://s3.amazonaws.com/vuliwisuwig/home_sweet_home_piano_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/nisoxow/64058419287.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/dexugamosologi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9d14c5ce-dc10-43e6-9b88-e119645509bd/44161074412.pdfIn PDF document text
- https://s3.amazonaws.com/sixenogafopoj/2018_subaru_forester_xt_maintenance_schedule.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9c709742-042d-4dbd-acfa-6bf53d9db70b/buvokapivetirugulusala.pdfIn PDF document text
- https://s3.amazonaws.com/varoximu/dd_cursed_items_5e.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bba83c48-bc61-41dd-ac4c-57db16379c27/rozovemogi.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_off0000cc5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC5A	5088 bytes
SHA-256: `92fc7db55b50eae8ad728b9a9e207a8da3e40c2b027fd42bcc8afa6f8f485605`
`font_01_sfnt_off0000ddce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDCE	10808 bytes
SHA-256: `f8920de6295ed4decac56dc91450b84161feecd3ac19751aaba544045280aba3`

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