PDF malware analysis — malicious · 7e76b755d5bf080a

MALICIOUS

PDF

66.6 KB Created: 2020-11-13 07:35:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: acb5f88924a4d191c6648889f3079237 SHA-1: 1dc775dbe106167ab885a6637bfb0811640a3496 SHA-256: 7e76b755d5bf080a37fdf2b407107f56481f857df2ecfba4efeb812ea4f74ba8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as malicious by ClamAV and an ML classifier, and it contains a large number of external links, including one to 'traffking.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a potential attempt to generate traffic or distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest it's designed to lead users to malicious sites or download further payloads, aligning with phishing or malware distribution tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://traffking.ru/aws?utm_term=biometric+residence+permit+card+application+form
- https://cdn-cms.f-static.net/uploads/4376099/normal_5f9035e0d90c5.pdf
- https://cdn-cms.f-static.net/uploads/4366331/normal_5f9e0d0b185c0.pdf
- https://ganusanawopat.weebly.com/uploads/1/3/4/4/134488834/bapof.pdf
- https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/sesakaf.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/mesotodimus/69863778373.pdf
- https://s3.amazonaws.com/mibiwivanetuj/93742975952.pdf
- https://s3.amazonaws.com/kibavutibeved/cyber_surety_air_force_tech_school.pdf
- https://s3.amazonaws.com/wizidimawag/srimad_bhagavatam_hindi_download.pdf
- https://s3.amazonaws.com/purufiz/30861771574.pdf
- https://s3.amazonaws.com/davolazupivowi/23352852657.pdf
- https://s3.amazonaws.com/nimuwet/36719990726.pdf
- https://s3.amazonaws.com/mesotodimus/jafip.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c65a.bin` `501b17e3e782fdb31871b79411fde1daea6819e512ea65a1cbe162ba553a5f2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC65A	5348 bytes
`font_01_sfnt_off0000d870.bin` `7897f80770458a10506dcb976bba0ddc4be3fd42a15acad88881ec1d2df9a4ab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD870	10480 bytes

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