Malicious PDF — malware analysis report

Static analysis result for SHA-256 782816f43d769869…

MALICIOUS

PDF

88.8 KB Created: 2021-09-01 10:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 48e825b9882894d9bce3ad77fb9a4c6a SHA-1: 1dce9d64069cb059fc85ba02eb51038e7316031c SHA-256: 782816f43d76986939a366956d0a464bc9d737a5706d70fa20feb67065afd725
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://laborke.ru/uplcv?utm_term=example+of+physical+fitness+test+scorecard PDF link annotation
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/4d6c32527f19266b1b6d6bfb518b7f06/57249525130.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161043a08755d4---mekivonazipowariredume.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/27128889348.pdfIn PDF document text
    • https://webhosting4.net/media/file/mebekesop.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/56281164921.pdfIn PDF document text
    • http://astmasme.com/userData/board/file/dolojubo.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/af6f8e557c264eed59216312526d24ba/24575829966.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3c5fcc4d4d---ronarumawizekutut.pdfIn PDF document text
    • https://fcr-fomentoconsumoerenda.com/uploads/files/67753815054.pdfIn PDF document text
    • http://grandviewcommunity.com/userimages/75666965023.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/2e51abca45beb715967593a852572704/74102100627.pdfIn PDF document text
    • http://drumlockingclamp.com/FCK_Editor_Images/files/tukaxururodibitom.pdfIn PDF document text
    • http://madang.eu/f_pds/fck/file/roxulavulokorigas.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a4507f84f---velobus.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7aa2a3b321---nixivamil.pdfIn PDF document text
    • http://anduong-nhatthanh.com/uploads/news_file/lalalazireletudifege.pdfIn PDF document text
    • https://seeyounow.net/userfiles/file/39771224135.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f00ba51e2---zujuwoga.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9dd60368f9---zeleruporafozak.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/89414179155.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/gcc5o4a7182u6nt22a3sd9pmfk/49231073616.pdfIn PDF document text
    • http://mn-print.ru/ckfinder/userfiles/files/7162734593.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607574a4d35b4---kiwubijifoxonidago.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://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_off0000f328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF328 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 11084 bytes
SHA-256: 8e5e8569dff915907abba2380bb5fdf40f1b7611cb92c90960803e15c10f33bd
font_02_sfnt_off000124e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E8 18272 bytes
SHA-256: 8c361a12716e8e1348e9f13eb668b728bedb7ff9462e6eeb7e91b6a5e50a0791