Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e36d233bf9c3e48…

MALICIOUS

PDF

86.2 KB Created: 2021-09-10 14:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: af61e7df8a7a4061404c911a35a95235 SHA-1: 179b4d0765e42e11df06d7050310c0111c36d0d3 SHA-256: 4e36d233bf9c3e4853efef4d342124ad04be8c0a7ac28936ca4bd66694e7ad95
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/uplcv?utm_term=clojure+android+app PDF link annotation
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613719c55bcfd---zoxiziroroliderexozek.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/e521b2bcfa7ca83e37034f7bfd555f55/62850157723.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16137bdb814d6d---38645789904.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/gakepimidujujudupesu.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161392f1ddc988---66562364030.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/likaxidixelilimetadeba.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/phmn8s94150mug127u2et2ilcl/vifanuvizomes.pdfIn PDF document text
    • http://suriyedostlukdernegi.org/image/files/nefomeluvazu.pdfIn PDF document text
    • https://dananeye.com/uploads/files/202109100215485848.pdfIn PDF document text
    • http://musik-fachberatung-neumarkt.de/images/uploadedimages/file/lazomepobegusotejerula.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/rusexoxogubetadutaza.pdfIn PDF document text
    • http://saimiri.name/upload/file/lorosufonavozuzefigewoli.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613338e1b5f3a---45900066031.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/sedagefomexozofiliwomi.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/020c2538e8b5cd2c1786b7b1fdc7a40f/70329620438.pdfIn PDF document text
    • http://innobiztour.com/FileData/ckfinder/files/20210909_4CC34871F292C5E6.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae133c9cbb---xisapofexafopofug.pdfIn PDF document text
    • http://briztravel.com/upload/files/96898859859.pdfIn PDF document text
    • http://eska-lift.ru/userfiles/file/pitivedudimokuresir.pdfIn PDF document text
    • https://aluvioneschicamocha.sinecsas.com/ckfinder/userfiles/files/legupuxubemilosifeseget.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/30975140040.pdfIn PDF document text
    • http://thoitranglani.com/upload/files/50262233319.pdfIn PDF document text
    • https://rugerwafers.com/demo/ruger/beta/userfiles/files/xibijuberelufuropek.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1be99aab8---25222183985.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab1a5b2a92---madukonutilo.pdfIn PDF document text
    • http://www.jysunshine-hotel.com/up_files/file/26373681711.pdfIn PDF document text
    • http://mosjob.ru/images/file/vusirugebezofobidesedezo.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/25460610487.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_off0000ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001055b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055B 10380 bytes
SHA-256: d36bef12de76d90cdc5f2ddc268a0ad680ed8cb8f81d9b02bd32f09c04bc6a0e
font_02_sfnt_off00011cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD2 18056 bytes
SHA-256: 010ab80c89b9d2f81fb225132c79c52ac118ba9b4ffcc9fa460822b1dbca5173