Malicious PDF — malware analysis report

Static analysis result for SHA-256 879d5bf5ff984bd0…

MALICIOUS

PDF

50.1 KB Created: 2020-08-08 11:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d7497d89b136630fdbaf0458586bdca SHA-1: 6a8b9f20240a0781cac04d091631da970afd16f0 SHA-256: 879d5bf5ff984bd0970e1b6b23ae35a975a3ac2ecf5d1abf43958254dd665fb4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body and embedded links suggest a lure for free downloads, likely a phishing attempt to redirect users to malicious infrastructure. The ML classifier strongly indicated maliciousness.

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://ttraff.cc/pify?keyword=hinayana+buddhism+pdf In PDF document text
    • http://files.christianlindke.com/uploads/1/3/1/8/131871622/7936485.pdfIn PDF document text
    • http://files.soinlauve.com/uploads/1/3/0/7/130738657/bebuj.pdfIn PDF document text
    • http://files.braverybox.com/uploads/1/3/0/7/130775228/denuxisamojajovolo.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/1/0433/1818/2041/files/pattern_making_books_for_fashion_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/xbox_one_dns_codes_gta_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/welixosopajomubugow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/mifolosazamivelusig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/priority_order_of_functional_groups.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/mechanics_of_materials_6th_edition_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4658/2944/files/lojudomavudovuxalute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/89902867883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/wagazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/peranarezet.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 5356 bytes
SHA-256: 9f4bac6f089575b7d1ba24369611d951f627473ebc0392d497857ded129ec4d2
font_01_sfnt_off000098a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A6 9904 bytes
SHA-256: 90d852b99ef8a3e9ec1e4d612680e3e522d9c8e288e47cb0eb0339527a2323c9

Open this report in the interactive analyzer, or submit your own file for analysis.