PDF malware analysis — malicious · 2d9017ac64b1df51

MALICIOUS

PDF

69.5 KB Created: 2020-12-17 02:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01fc0090dd2a7f8e8b51243142a2a2d0 SHA-1: 58e409690266cb2c0d8dd5771433a48eafb3db2a SHA-256: 2d9017ac64b1df51cc269cdcc62ecab52b0e220d369f7a3ce21307d07bdd71f6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many pointing to other PDF files hosted on various domains, suggesting a link farm or phishing campaign. The primary URL, trafffi.ru, is likely a malicious redirector. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafffi.ru/strik?utm_term=where+to+find+nether+wart+in+hypixel+skyblock
- https://cdn-cms.f-static.net/uploads/4366327/normal_5f8c2a37d07c6.pdf
- https://cdn-cms.f-static.net/uploads/4485454/normal_5fa9251be1ccb.pdf
- https://zuforupixonop.weebly.com/uploads/1/3/4/3/134394080/1593184.pdf
- https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/7227994.pdf
- https://cdn-cms.f-static.net/uploads/4374199/normal_5fb9c2004110b.pdf
- https://cdn-cms.f-static.net/uploads/4370268/normal_5fa0fe5f1ec3f.pdf
- https://nowitijot.weebly.com/uploads/1/3/4/7/134716658/8099658.pdf
- https://cdn-cms.f-static.net/uploads/4405185/normal_5f91dda13252c.pdf
- https://tubumafipe.weebly.com/uploads/1/3/4/4/134458357/vidolabi.pdf
- https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/1faa102.pdf
- https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/potiz.pdf
- https://nagopajasire.weebly.com/uploads/1/3/4/3/134311949/rizuf-rekumiguxatifi-piligul.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static1.squarespace.com/static/5fc57d17d26ff1194f92edd5/t/5fc72a1fa907d7439cd54d63/1606887969208/48912176897.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_off0000cf97.bin` `e13a3bfeee218f5f8021eea4f40f31a1560e6829eae0813c31cb9be45dc46c6c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF97	5724 bytes
`font_01_sfnt_off0000e32f.bin` `efc66273a08138b5e3617ef3cd5b390d767de6aa8f221fe04b42a9d55601ebfa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE32F	10932 bytes

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