Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2e9888932138d7…

MALICIOUS

PDF

69.5 KB Created: 2021-10-27 16:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-14
MD5: 86676095f88ed90c3447858870a59385 SHA-1: 458f31d96d177b5db7f825174194b11336e04516 SHA-256: ff2e9888932138d7b78c4c0c7dcfe40363796e240d71a70d68be21fc3b8a101a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://df-2.de/images/daten/file/14981720409.pdf In PDF document text
    • https://budgetparking.ca/admin/uploads/file/36017317211.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161588777e3371---jimusekupuwekiv.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/wobeva.pdfIn PDF document text
    • https://pragatitic.org/ckfinder/userfiles/files/52777494812.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1615e723f5badb---88429227987.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/38991113157.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/83079539270.pdfIn PDF document text
    • http://neuchina.org/userfiles/file/12830783148.pdfIn PDF document text
    • http://alptw.com/images/files/lujaxuvuxip.pdfIn PDF document text
    • https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/97100340622.pdfIn PDF document text
    • http://studiomalpocher.it/userfiles/files/kujegagogegegob.pdfIn PDF document text
    • https://micsys.in/userfiles/file/59047871700.pdfIn PDF document text
    • http://e-district.org/userfiles/file/64373132294.pdfIn PDF document text
    • http://i-physiology.ru/upload/97839860549.pdfIn PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/xarelogegesidizewebavodu.pdfIn PDF document text
    • https://md-bud.pl/szklo/photos/file/perafodile.pdfIn PDF document text
    • http://forma8.kz/ckfinder/userfiles/files/16974258319.pdfIn PDF document text
    • http://jjc-dev.com/userfiles/file/doguritasisopi.pdfIn PDF document text
    • http://pscworld.eu/ckfinder/userfiles/files/nazezonojofojatazujidix.pdfIn PDF document text
    • https://n-tlg.com/files/file/gazotomubonojixinex.pdfIn PDF document text
    • http://ponozky.gultio.cz/webpagebuilder/ckfinder/userfiles/files/13716684218.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/161636957cbc68---55426385809.pdfIn PDF document text
    • http://sissonne.hu/editor_up/91576245439.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=different+types+of+software+testing+pdfPDF link annotation
    • 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 extracted file (font_00_sfnt_off0000b27a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b27a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB27A 14676 bytes
SHA-256: 2355d49732f9d48c74ab3719f467a8c61029f26f1ea24b6a64169e079991a86c
font_01_sfnt_off0000d73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ef51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF51 10828 bytes
SHA-256: c7eb1e9d4c4f245c31b64620d4af2ef7f44ffe653341eba54be276d43f52d9d5