PDF malware analysis — malicious · bec26b11989424fe

MALICIOUS

PDF

72.2 KB Created: 2020-11-29 16:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: ce940567f12811bb5c80423bf5cdb863 SHA-1: 1c2b6bb64dc842a3c872acdda43e14fcd8568fb8 SHA-256: bec26b11989424fe1cb89b407808cfe36f9d9c7647dc9b40c90d1090742b86ff

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of an external URI and embedded URL suggests an attempt to redirect the user to 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://trafffi.ru/123?utm_term=symbols+in+celia+behind+me PDF link annotation
- https://static.s123-cdn-static.com/uploads/4366045/normal_5fc3986f7353e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4483365/normal_5fa81b57cbe3b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449616/normal_5fa3e85aaf3b9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471083/normal_5fb2c99c8e7f0.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/mefovu/sozudopusugin.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1a2cf03b-5bf1-42fb-81d3-8b8ebe449cbe/60785801539.pdfIn PDF document text
- https://s3.amazonaws.com/memul/dell_latitude_7490_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c730ac6e-db31-471d-8610-4ca4330d9992/ghost_in_the_wires_audiobook_free.pdfIn PDF document text
- https://s3.amazonaws.com/muvemasoxaji/xijodiwedib.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be3cf765-65a2-4496-b4e4-ae2e2098879f/217567729.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/085ae71d-f922-4bfe-b008-3fc34969fc42/novixamobodakavuw.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_off0000dba3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBA3	5428 bytes
SHA-256: `c8e5528b9792c6350019d9d6170c94e6ebba60cb72e833f291e70b5a103b8236`
`font_01_sfnt_off0000edf7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDF7	11392 bytes
SHA-256: `e2c54236e4b30f963e7efbf87d3c3e9c69b68fdb6ff252a4bff050e4b2a4d410`

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