Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e5105575ab1a51…

MALICIOUS

PDF

71.9 KB Created: 2021-02-21 06:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ca2e873a290d81916ffa313874f1e4bc SHA-1: 860ad10c66c073f94dec935db23b9717dc189438 SHA-256: f8e5105575ab1a512e4492af5639fde3db4e31c981fccbee04717eb7d7de27ff
126 Risk Score

Malware Insights

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

The PDF contains multiple external URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=what+are+the+different+fields+of+mechanical+engineering PDF link annotation
    • http://leftoutclub.com/google_chrome_portable_apps52gm8.pdfIn PDF document text
    • http://newser.site/18509645421nkobt.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/YPjeLS6/20846251142.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/Z5Ugcds/33448721367.pdfIn PDF document text
    • http://trikolor.site/guitar_arpeggios_exerciseso6vle.pdfIn PDF document text
    • https://cdn.sqhk.co/bidufewo/6qEqnfX/hardest_test_in_the_world_game_unblocked.pdfIn PDF document text
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/3547b203b49593.pdfIn PDF document text
    • http://fredo.run/nemabeg66dkg.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/gjyievi/kalagalifabupuwopokir.pdfIn PDF document text
    • https://cdn.sqhk.co/jigekuragige/djg5Eib/waxeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xixovunutev.epizy.com/ark_hack_ios.pdfIn PDF document text
    • http://melamefi.rf.gd/how_do_i_get_my_directv_remote_to_control_the_volume.pdfIn PDF document text
    • http://zefitog.epizy.com/full_body_workout_routine_at_home.pdfIn PDF document text
    • http://xewenofos.epizy.com/85886703867.pdfIn PDF document text
    • http://marudemaxewuv.epizy.com/4928590281.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_off0000db9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9C 5448 bytes
SHA-256: 5dce5ecb33286a40efaaab06f811a488b654760830b44b4c4b490435ce3ebd97
font_01_sfnt_off0000ee09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE09 10732 bytes
SHA-256: da1982fe46d756ef3bc05fed6aac8c2f0520cec5a3502a47c4d2aebdd1f4c59c

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