PDF malware analysis — malicious · f1f9730127744591

MALICIOUS

PDF

71.5 KB Created: 2020-12-16 00:33:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 079db783d8f56bfdf77bb855963d7cd3 SHA-1: bd2497206b666da82ffd3ceeb14534cedb39065f SHA-256: f1f9730127744591874f9df5c9df538206c895b16fa77bda400a4b5d4621eddf

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of the phishing infrastructure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious website, consistent with phishing or malware delivery.

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=cafe+central+vienna+trotsky PDF link annotation
- https://cdn-cms.f-static.net/uploads/4403537/normal_5fb86d9dda252.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4424043/normal_5fce36110012a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454988/normal_5fd6137cd9e58.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/pomaxa/29701939278.pdfIn PDF document text
- https://s3.amazonaws.com/visagogijulep/fizixopil.pdfIn PDF document text
- https://s3.amazonaws.com/zategafozasiru/2969047281.pdfIn PDF document text
- https://s3.amazonaws.com/dinigugaxej/27184589500.pdfIn PDF document text
- https://s3.amazonaws.com/dazovosugev/56100325903.pdfIn PDF document text
- https://s3.amazonaws.com/nemafu/simon_ielts.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3074fe61-35ee-4b10-9db8-5d9ee4986134/eater_of_worlds_terraria.pdfIn PDF document text
- https://s3.amazonaws.com/gebaxovudofe/preposition_of_time_worksheets.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_off0000d78e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD78E	5008 bytes
SHA-256: `a43d6603364446d1a013b50998a8eb6e90c3790afb7724991843965bc1fa46b1`
`font_01_sfnt_off0000e8b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8B8	11912 bytes
SHA-256: `ab07466f40a72d28499d155093590d01a79afbb2d9960f9200cfb6b4ee09e3c9`

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