PDF malware analysis — malicious · 60f572d50331b98e

MALICIOUS

PDF

53.5 KB Created: 2020-10-01 13:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10

MD5: 24d5516355088bf74ac8a3b0409581ba SHA-1: 21791c324317746c604d86cd3a557f5f8ca7ffcf SHA-256: 60f572d50331b98e7af1f996fc97407f99431a772626093aa4d307b37b2b0301

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://cctraff.ru/strik?keyword=allegra+bula+pdf+xarope In PDF document text
- https://site-1038980.mozfiles.com/files/1038980/wezunusis.pdfIn PDF document text
- https://site-1036767.mozfiles.com/files/1036767/wosiburujilimofis.pdfIn PDF document text
- https://site-1036820.mozfiles.com/files/1036820/ponobadavonopu.pdfIn PDF document text
- http://fugej.nphsjrwolfpack.com/uploads/1/3/0/9/130969341/3438753.pdfIn PDF document text
- https://site-1038890.mozfiles.com/files/1038890/suxogaworexom.pdfIn PDF document text
- https://site-1036746.mozfiles.com/files/1036746/bogamigejopepuzofexamed.pdfIn PDF document text
- https://site-1036832.mozfiles.com/files/1036832/gewidulibejasunukabukevab.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/2610/6528/files/89091038865.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5317/0334/files/64295898697.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3191/9765/files/light_switch_guard_rocker.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_off000093e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93E8	5228 bytes
SHA-256: `be10238fe39d823e550f048d359e83d586aaf1b701ab7ecca8b7b26fa5db241d`
`font_01_sfnt_off0000a5c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA5C2	10548 bytes
SHA-256: `2cbaca981cf684ca0f17ecd4e4b0f0f6c4fd5ec31eb6caa716620d6fa91a2193`

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