PDF malware analysis — malicious · 26723824b13a3865

MALICIOUS

PDF

78.6 KB Created: 2020-11-22 15:45:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2b30a5c9d9c8dddcfe2a1458fe037d7e SHA-1: d358ec79dd79e314a1622b82d89c726551be5c60 SHA-256: 26723824b13a386555c7a7619ee88667a6b7966600beea3298422c462d747849

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, identified as a link farm, suggesting a phishing or scam attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classifying it as a phishing trojan. While no scripts were directly extracted, the presence of external URLs and the nature of the heuristics point towards a malicious document designed to redirect users to potentially harmful sites.

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://trafficel.ru/aws?utm_term=website+to++hollywood+and+bollywood+movies
- https://cdn-cms.f-static.net/uploads/4408177/normal_5fa1fbbe05d00.pdf
- https://cdn-cms.f-static.net/uploads/4393635/normal_5f909822e30bb.pdf
- https://cdn-cms.f-static.net/uploads/4365547/normal_5f8707cd9085a.pdf
- https://cdn-cms.f-static.net/uploads/4419205/normal_5f970f73e042f.pdf
- https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/belem.pdf
- https://mibonapa.weebly.com/uploads/1/3/4/3/134308174/mizet.pdf
- https://cdn-cms.f-static.net/uploads/4453890/normal_5fb921ca1aed4.pdf
- https://cdn-cms.f-static.net/uploads/4485014/normal_5fad683416636.pdf
- https://cdn-cms.f-static.net/uploads/4388280/normal_5faa8199051fd.pdf
- https://cdn-cms.f-static.net/uploads/4365586/normal_5f875d816a2fc.pdf
- https://cdn-cms.f-static.net/uploads/4483602/normal_5fb51b2f102e9.pdf
- https://cdn-cms.f-static.net/uploads/4369505/normal_5f89d03f913d2.pdf
- https://cdn-cms.f-static.net/uploads/4451567/normal_5fba45dcbda15.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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_off0000f75e.bin` `cb4e6cae17ec263f6de11dd51dedb5ef30ab5dd754e549ea4ceb19cacc66a632`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF75E	5376 bytes
`font_01_sfnt_off0001099f.bin` `5c68c0aed4890102542c5b5c3ec868caeb3db5a734ae5b21e5fa8ca72f11a677`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1099F	10468 bytes

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