PDF malware analysis — malicious · 4e339612e860f5e9

MALICIOUS

PDF

44.4 KB Created: 2020-10-04 12:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19

MD5: 0b465ad7c0a387c2d6cc3364a42ed84d SHA-1: 768e19edf37a50c0727f449b5494812fbf2a6203 SHA-256: 4e339612e860f5e9fee61b3f879816df1e4244663a4a1d4c625f1657cf498ca6

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=sync+me+pro+apk+download In PDF document text
- https://site-1037840.mozfiles.com/files/1037840/96182319195.pdfIn PDF document text
- https://site-1036725.mozfiles.com/files/1036725/68945654807.pdfIn PDF document text
- https://site-1036840.mozfiles.com/files/1036840/ramunekibajaruzopupo.pdfIn PDF document text
- https://site-1036676.mozfiles.com/files/1036676/vodomoguvaximivixufigo.pdfIn PDF document text
- https://site-1039642.mozfiles.com/files/1039642/56024954114.pdfIn PDF document text
- https://site-1037890.mozfiles.com/files/1037890/30764468701.pdfIn PDF document text
- https://site-1039777.mozfiles.com/files/1039777/63525577232.pdfIn PDF document text
- https://site-1038539.mozfiles.com/files/1038539/vofijutazew.pdfIn PDF document text
- https://site-1037274.mozfiles.com/files/1037274/8088270984.pdfIn PDF document text
- https://site-1036828.mozfiles.com/files/1036828/3611380019.pdfIn PDF document text
- https://site-1037091.mozfiles.com/files/1037091/64962197574.pdfIn PDF document text
- https://site-1042204.mozfiles.com/files/1042204/81423037600.pdfIn PDF document text
- https://site-1037130.mozfiles.com/files/1037130/19011550393.pdfIn PDF document text
- https://site-1039897.mozfiles.com/files/1039897/40727113690.pdfIn PDF document text
- https://site-1037114.mozfiles.com/files/1037114/sudofuxufasavuko.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005a47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A47	5404 bytes
SHA-256: `510baa1c4653d8c7e466a6d89d07585a6fd933b7319db0fa642eca8c37b1036d`
`font_01_sfnt_off00006cb0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CB0	10180 bytes
SHA-256: `5eb011f3e01af88f32a1882b3812486b71ca4be6071d9066ad3539e808830c8b`
`font_02_sfnt_off00008fc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FC1	16092 bytes
SHA-256: `39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67`

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