PDF malware analysis — malicious · f84bc055bbb2a70c

MALICIOUS

PDF

60.4 KB Created: 2020-11-19 19:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 2736b69f0b4b74277a62116b5aa3a14d SHA-1: 907d7b126cd8dbae9c1167f72fb9020ac78d4582 SHA-256: f84bc055bbb2a70c3c67968ad7f111c84389ab9adb276d79804fb7eccd0fd15f

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 potential phishing lure. The ClamAV detection and ML classifier strongly indicate maliciousness. The PDF_URI heuristic also identified an external URI, suggesting the document is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=majora%2527s+mask+strategy+guide+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4379961/normal_5f965312cb9af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417213/normal_5f9e9e8d5033b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449615/normal_5fa89fbaab555.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481065/normal_5fb49952651de.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381318/normal_5f9d03fb2ecbb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423454/normal_5fa9db3625eb0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488807/normal_5fb5c254b8dde.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366348/normal_5f9320f316eb1.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/domegagowevag/17769790788.pdfIn PDF document text
- https://s3.amazonaws.com/xukonakefules/47508269412.pdfIn PDF document text
- https://s3.amazonaws.com/rekorewexidiwo/86466503676.pdfIn PDF document text
- https://s3.amazonaws.com/sasufufa/98786192016.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_off0000ae0d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE0D	5612 bytes
SHA-256: `c7e65cd0e8229f71182c2f4f4b2bd902e32ca9f48805de5371b5b44fd4d27ec4`
`font_01_sfnt_off0000c13a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC13A	10392 bytes
SHA-256: `d416ae8466d473223f85866df40131e156c49d51a3253f93c33f3e840375d5ec`

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