PDF malware analysis — malicious · 51b1540118d9c1c1

MALICIOUS

PDF

66.2 KB Created: 2020-11-18 15:09:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 8782f5d56eea08e3a3f879e5891cdd1a SHA-1: 1e9a73b3a5b73d1e25f009c30f16d3519d6d54fe SHA-256: 51b1540118d9c1c1ac5e9b157e07e9440c632c4b772ec8b9648318ea49be6187

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of the external URI and the overall detection suggest a phishing attempt to redirect users to a malicious site.

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://trafftec.ru/strik?utm_term=c+programlama+derne%25C4%259Fi PDF link annotation
- https://cdn-cms.f-static.net/uploads/4446394/normal_5fa635dacce69.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447251/normal_5fa118cf4dffa.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/netinuwa/87447981373.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/195f40ac-0911-41d4-9f5b-9e7d820ecb9d/all_new_promo_codes_roblox_february_2020.pdfIn PDF document text
- https://s3.amazonaws.com/nepawigexa/galleria_borghese_guide_book.pdfIn PDF document text
- https://s3.amazonaws.com/pegek/95170032652.pdfIn PDF document text
- https://s3.amazonaws.com/tumasun/19124199906.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b2889cb9-2d4f-4817-b498-f5603c263e2e/55608963868.pdfIn PDF document text
- https://s3.amazonaws.com/lebaxa/97323337723.pdfIn PDF document text
- https://s3.amazonaws.com/sugowubuf/37645789714.pdfIn PDF document text
- https://s3.amazonaws.com/zakunafu/xerox_workcentre_3615_service_manual.pdfIn PDF document text
- https://s3.amazonaws.com/wuzalugiseto/wixebi.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_off0000c2e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2E6	5236 bytes
SHA-256: `3cad7405608803684e10a4b5d2821f72709f6e0a2df7c794920d15b5c82515de`
`font_01_sfnt_off0000d424.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD424	12344 bytes
SHA-256: `42432c2655aa12c09cd86cb4f027134911e48667fe8aa8143b3d1c3e226d92c1`

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