PDF malware analysis — malicious · a6ff45984130ce8e

MALICIOUS

PDF

41.6 KB Created: 2020-11-07 10:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 568ceed499f1b1035649f1f762444ec8 SHA-1: 508e65c852bc6bf668cd3148c2abdea07bda7189 SHA-256: a6ff45984130ce8e93c6ffae2bdb732b7d65cf3f4b4b37e9952c703a0d958750

124 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://traffine.ru/123?keyword=bradley+cooper+lovers In PDF document text
- https://cdn-cms.f-static.net/uploads/4366359/normal_5f99b021a9835.pdfIn PDF document text
- https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/biguwel.pdfIn PDF document text
- https://xilemuje.weebly.com/uploads/1/3/4/2/134265988/garapubigakazuzo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408348/normal_5f97986479ce7.pdfIn PDF document text
- https://wuxepufoz.weebly.com/uploads/1/3/4/3/134371519/vogolegorotiduduni.pdfIn PDF document text
- https://panujiwawavila.weebly.com/uploads/1/3/4/4/134457592/d7c1e09e0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
- https://s3.amazonaws.com/piwanisaj/kenmore_appliance_manuals.pdfIn PDF document text
- https://dexorufokep.files.wordpress.com/2020/11/19830351262.pdfIn PDF document text
- https://s3.amazonaws.com/bunobu/17785200226.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_off000063eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63EB	5276 bytes
SHA-256: `42e33060ff309b8af44b1ced4ca3393a127bf151b8cd0be4ead420aaaa384c8f`
`font_01_sfnt_off000075f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75F8	10672 bytes
SHA-256: `7534413e513f26952218cd9be744bba80e1b6c7fb1735078be6e19daa186e52b`

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