Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd109cfc0695a9a…

MALICIOUS

PDF

82.0 KB Created: 2021-08-18 13:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 21a362ba75933b1b8c57e5685085f2c8 SHA-1: 1099dbb144164cb43a472fb1e45b114ffd823075 SHA-256: 3dd109cfc0695a9afb64bf941cac0f91c44cb1008aeefc119b5c87aabcad7db9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://infrive.ru/uplcv?utm_term=moomoo.io+hack+2020+moojax PDF link annotation
    • http://valaptop.com/ImagesVA/file/55964310484.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/le6a53lqc5nuolotohgjiqmfgo/soduvel.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ct1veqm397t0sdus4hc1ls5u00/voxakepeterekekomevufezo.pdfIn PDF document text
    • http://scmsalliance.com/clients/864514/File/bovabuwexavezisopabif.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/d45c799de3a61095cb61b2b75e3c0d4d/8428273446.pdfIn PDF document text
    • https://cavalier-hundezucht.ch/userfiles/file/13850615000.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/0b232c6b3916245878d2fbc18f41c83e/medibebetadogumapuxekej.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160926df91b323---lodegisomitaturijemikebi.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc1ec068725---zaruboj.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c22c0bf83f---fozenetopivage.pdfIn PDF document text
    • https://pharma-tools.eu/galeria/file/30529007888.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607d529fc0e2b---kukorifidawokuwuxigigoj.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/esv341bmi4rorq7bjfoa48mq83/88233204414.pdfIn PDF document text
    • http://dezmaster.com/userfiles/file/rulevoxokizimudanugex.pdfIn PDF document text
    • http://hilltopperalumni.com/clients/9/93/936f23dc4abb03f6d4a1aae2c8a32781/File/gerileredexewesapi.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/80240514330.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609845c864dfa---88069992975.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/jifemirujibul.pdfIn PDF document text
    • http://philipsphotographystudio.com/sadepilusilimolezekoguniw.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab8ff8b176---92944866513.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/jabago.pdfIn PDF document text
    • http://lovepetclinics.com/file_media/file_image/file/95891254729.pdfIn PDF document text
    • http://irths.com/upload_files/files/62349648618.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/95937208810.pdfIn PDF document text
    • http://citywideok.com/clients/75789/File/5679896337.pdfIn PDF document text
    • http://flatadministration.com/uploades/fckeditorfile/siguki.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_off0000de7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7C 17092 bytes
SHA-256: 5314d9bbe94c498305cdb57db3f650ff17c135a9afd778351c620eb7a9cdd3b5
font_01_sfnt_off00010a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 10472 bytes
SHA-256: 4d79823329a959df67c27ef55e4a185e07f5764eafdfbbcef3fabf8181176ce4
font_02_sfnt_off00012260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12260 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1