PDF malware analysis — malicious · 7939e589845bcd3c

MALICIOUS

PDF

39.8 KB Created: 2020-10-11 00:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14

MD5: 4603c8d2132ab8f8fa94144e6cf822ea SHA-1: 74bbc0b0621116971c09b65337f1550f2a1987d7 SHA-256: 7939e589845bcd3c6221cfbdafc401957b51bedd660539e789fc9f18c9ebd054

194 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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=les+miserables+sheet+music+violin In PDF document text
- https://site-1043963.mozfiles.com/files/1043963/12134656268.pdfIn PDF document text
- https://site-1039183.mozfiles.com/files/1039183/81233215608.pdfIn PDF document text
- https://site-1036911.mozfiles.com/files/1036911/visinopomenilagen.pdfIn PDF document text
- https://site-1037282.mozfiles.com/files/1037282/nagujebipimozavanapaz.pdfIn PDF document text
- https://site-1038985.mozfiles.com/files/1038985/waweketixe.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/1/0433/2532/5467/files/21324185403.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8480/8346/files/xumevixututojaleb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/2771/2165/files/xekudijanugazumivefa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/2275/4207/files/square_root_of_x_graph.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9465/3594/files/54052717513.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/3784/6425/files/ppt_on_data_mining_applications.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/1016/5416/files/boxizum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/8206/7357/files/time_set_minecraft_night.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4306/1913/files/hw_pass_printable.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0243/7527/files/27770264443.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_off00005056.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5056	5180 bytes
SHA-256: `5c8be2e6996c0d0fcd57f28e174140ee04ac415d872ef8edb5f6b680e31133dc`
`font_01_sfnt_off000061cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CB	14852 bytes
SHA-256: `7bc7ae11cb2832fc87e93f01f67737aa9718b06cb5d218fb688a319794e2ac45`

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