PDF malware analysis — malicious · 2d2fdad32487b608

MALICIOUS

PDF

67.8 KB Created: 2021-02-14 07:05:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f4ab06e8bd71a30864a0cee9a859fdc2 SHA-1: af0feb42f7a1242e01befb5d6417cb6b1c9761c2 SHA-256: 2d2fdad32487b608785cc72d7acdd0c67d575fb96233a237646b2856310a5454

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs 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://druttle.ru/wix?keyword=enrique+iglesias+hairstyle+name
- https://wodosokereso.weebly.com/uploads/1/3/1/4/131407547/bce03d.pdf
- https://cdn-cms.f-static.net/uploads/4382421/normal_6023f18130166.pdf
- https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/2fd0b928e8f2.pdf
- https://vewekazetuxif.weebly.com/uploads/1/3/1/3/131379326/6461797.pdf
- https://cdn-cms.f-static.net/uploads/4387806/normal_601fee9b8344d.pdf
- https://cdn.sqhk.co/pixefavenar/b0r5gcH/tripp_trapp_high_chair_remove_tray.pdf
- https://static.s123-cdn-static.com/uploads/4458628/normal_5fcf44469c8c9.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/xafaxotaful/ankhiyon_se_goli_maare_song_pagalworld._io.pdf
- http://moxododokojuke.epizy.com/sample_psychological_evaluation_report_for_immigration.pdf
- https://s3.amazonaws.com/tibitexil/11014050713.pdf
- https://s3.amazonaws.com/votubukaxogilix/also_as_well_too_exercises.pdf
- https://s3.amazonaws.com/wipotegadodorek/apple_carplay_software_toyota.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_off0000cd62.bin` `2b9796e165b8be336ba75d0f2a9b60db9e8de9d703a125615d2e601b6b33b718`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD62	5284 bytes
`font_01_sfnt_off0000df3a.bin` `6e87d6261812abc91beccafd0f7c66a25ac7c949e18fb1a0c263afd425390abe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF3A	10316 bytes

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