Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb43a94d5017d32d…

MALICIOUS

PDF

82.8 KB Created: 2021-02-24 03:49:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d977482ca6cdc54e23e5272fca41d07 SHA-1: 86bd2ddbd10ca20c15a9d52793cec043f95694dd SHA-256: fb43a94d5017d32d542cd491d433926f63fa799cba22c7d2efda1a3ba73ff762
66 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to various PDF files hosted on disposable domains, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs points towards an attempt to drive traffic to potentially harmful content. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or content-luring campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=pokemon+cards+without+rarity+symbols PDF link annotation
    • http://waystep.site/target_shooting_club_melbourne8pxfs.pdfIn PDF document text
    • http://redirunna.xyz/krashen_theory_of_second_language_acquisitionnapqh.pdfIn PDF document text
    • http://my-favshoph.online/resident_evil_8_village_xbox_oneidxsc.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/Bhdbgfy/18812598765.pdfIn PDF document text
    • https://cdn.sqhk.co/juvowisire/iijgKia/12938888254.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/IjjjidV/airline_tycoon_deluxe_online_spielen.pdfIn PDF document text
    • http://yogait.space/replace_sena_speakersoqnxv.pdfIn PDF document text
    • http://wtia.space/211811030280fy5p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366347/normal_6006fa67f2df6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lisokabosexipep.epizy.com/vakerof.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.

FilenameKindSourceSize
font_00_sfnt_off000106e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E5 5580 bytes
SHA-256: 80382b9a64ae3a03b8df8a0ffaa284be184bece4baa290ae99c7f3ce2f9f9d86
font_01_sfnt_off000119c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C7 10720 bytes
SHA-256: 72f029633cdc8086336fc29466337e39f80de59518756cacae1da1e88a7af7c9