Malicious PDF — malware analysis report

Static analysis result for SHA-256 803ff63edb86b289…

MALICIOUS

PDF

82.8 KB Created: 2021-03-28 04:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c3fceee194358d4fc23da274cafba1ef SHA-1: 5603ec989f378543646aaef3cd297ce453f67aee SHA-256: 803ff63edb86b2896b0f1f9cc11f66c9282daa023dfe8668f56dde81efc2d297
66 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to disposable domains and potentially malicious content, as indicated by the PDF_SEO_DISPOSABLE_LINK_FARM heuristic. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to redirect users to harmful websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=bubbly+lyrics+dej PDF link annotation
    • http://ledivezakaw.iblogger.org/best_podcast_for_beginner_investors_uk.pdfIn PDF document text
    • https://sovivagigeb.weebly.com/uploads/1/3/5/2/135296454/2906099.pdfIn PDF document text
    • http://mosuxuvemuzuwex.mywebcommunity.org/71989064620.pdfIn PDF document text
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/1407026.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/ujaibgi/gorexafefuf.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/biocatalysts_and_enzyme_technology.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/70f536c475858f5.pdfIn PDF document text
    • http://zapixexarepol.medianewsonline.com/41715727454.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/o0hjghn/little_hero_coloring_book.pdfIn PDF document text
    • https://cdn.sqhk.co/sozetojedisu/d2HgiqJ/78465132870.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/f7HbyCE/gusetezigatolibuneg.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/roxisimudijuradaxuz.pdfIn PDF document text
    • https://cdn.sqhk.co/bamikalagov/ZdheY11/burnout_legends_psp_cso_free.pdfIn PDF document text
    • http://pedakuf.22web.org/xipekexowagopokanipez.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/WKcid6x/wixepete.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mizokulo.epizy.com/wonidu.pdfIn PDF document text
    • http://xegeduv.rf.gd/gevemujojemifiveso.pdfIn PDF document text
    • http://jiguteduvuvuxa.rf.gd/although_even_though_despite_in_spite_of_exercises.pdfIn PDF document text
    • http://xivubijorudi.epizy.com/finanesetevoj.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
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000f3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A1 5092 bytes
SHA-256: a98b9625aad4d81bfa582f73f226eadc9ba59dc70812ef29c868a18c4bbe786a
font_01_sfnt_off0001050c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050C 10688 bytes
SHA-256: e362954b9c80f24f98a797d75d59e0108b3a9aadd61197a3741118380e75fef4
font_02_sfnt_off000129bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129BB 16036 bytes
SHA-256: c07d6a93f9a4d4d037083e477a1a524ebe5f1d2ccaf6c52f4f82049831e508c7

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