Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b06368a7dbda34…

MALICIOUS

PDF

69.0 KB Created: 2021-04-04 06:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4aafffbbf742647ddf43b5e73924da0f SHA-1: b1c7741774ad5e53eff5bea6545d7958c53d7688 SHA-256: 82b06368a7dbda34f126b15e6bd907791dbed4f103d99a750c633288a60615bf
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm designed for SEO manipulation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit users seeking content, aligning with a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/award?keyword=spiderwick+chronicles+book+4+pdf+free+download PDF link annotation
    • https://s3.amazonaws.com/lurutopobi/fezawo.pdfIn PDF document text
    • http://tesilav.sportsontheweb.net/ambiguous_loss_book.pdfIn PDF document text
    • http://sokitejosororag.iblogger.org/3205687907.pdfIn PDF document text
    • http://gizaripe.iblogger.org/37353952738.pdfIn PDF document text
    • http://pomuropujuj.22web.org/43317251926.pdfIn PDF document text
    • http://dorubugupik.22web.org/pujiwiwizugelolisod.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/online_iti_form_maharashtra_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/RiaDh9X/27804605637.pdfIn PDF document text
    • http://xakujuseboxomov.iblogger.org/dedesijolizav.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/cqSVroB/ear_infection_in_dogs_yeast.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/jgjahho/89485781294.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/66055551856.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/what_does_genesis_chapter_6_mean.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/ao5vOij/47853242516.pdfIn PDF document text
    • http://dalejupoguj.22web.org/jowikuzifafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_6ab14206e42c4f5197c09b8d069568c2.pdf?index=trueIn PDF document text
    • https://af431a04-9ebc-4ea4-a98d-45e4ffbfad14.filesusr.com/ugd/485053_fc19458e3d1c4a53bc0ee92e1937afb7.pdf?index=trueIn PDF document text
    • https://631ffb88-cf2d-4844-8d6b-9338a1b21cc5.filesusr.com/ugd/d24e6f_5561c8b8d26448d48251c2d9d69b0c61.pdf?index=trueIn PDF document text
    • http://kepefemez.epizy.com/27138770618.pdfIn PDF document text
    • http://damexodawu.epizy.com/febusowazaxigumulibifokuk.pdfIn PDF document text
    • http://mubadel.epizy.com/63574749653.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/stages_of_green_revolution_in_india.pdfIn PDF document text
    • http://matujuluji.epizy.com/xitam.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_off0000cf4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4A 5728 bytes
SHA-256: 738145bb3b33efa51e3b844bd37b3ded5c7ac0b5423af93a6e7b5787fb2a6e58
font_01_sfnt_off0000e2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E1 10300 bytes
SHA-256: 25fd32a244ad7873f4f72765ab7572f23656fd0bad3f690d47ea5e4a17d4900b

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