PDF malware analysis — malicious · 38dec4ac4da7e45e

MALICIOUS

PDF

62.3 KB Created: 2020-12-29 23:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: d2a8d781a5a5ec5879dbb6ce5aaa6024 SHA-1: 86d6f81622215bda8cbf70643af03642c206aa93 SHA-256: 38dec4ac4da7e45e00175c5d93bbdea0a4ebcd287a425678d8b9daf5a73984e9

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URL, 'https://traffnew.ru/strik?utm_term=running+away+from+dog+gif', which is likely used to redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the overall detection strongly suggest a phishing or malware delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=running+away+from+dog+gif PDF link annotation
- https://cdn-cms.f-static.net/uploads/4447497/normal_5f9e5d8b52ee7.pdfIn PDF document text
- https://cdn.sqhk.co/fevivesuxofo/ghyhdhg/bajogesoxizape.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481423/normal_5fe6ed0a25452.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4472484/normal_5fd0464ab5a93.pdfIn PDF document text
- https://cdn.sqhk.co/tonuviwa/hCig7hd/sazazijogi.pdfIn PDF document text
- https://cdn.sqhk.co/busosuwik/Rf5Hiij/99605532956.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446636/normal_5f9f7652a1bbb.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/setigafat/barcelona_vs_liverpool_match_report.pdfIn PDF document text
- https://s3.amazonaws.com/mipeboro/automobiles_full_form.pdfIn PDF document text
- https://s3.amazonaws.com/xurixado/sojesumebaroxuki.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_off0000b54e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB54E	5220 bytes
SHA-256: `aafdcac31b22a46c91c17277fb433891fe5b351cefd2f51aef9fef435a9cd6ae`
`font_01_sfnt_off0000c71d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC71D	12044 bytes
SHA-256: `534afdb33686b038588992c2e963f3b1b6ecad4a457234c6ef2e3a28ca603992`

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