Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9dde7f422a4cf9…

MALICIOUS

PDF

95.2 KB Created: 2021-06-28 19:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a330a313e0fed56916f00475ffdbe99d SHA-1: a28be549db6d2de422cb6356af4afa89008c10f5 SHA-256: ed9dde7f422a4cf9053e70ebaa44a77c6c6c3b94d6bc59ee94444bacbedd3b8d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs that point to compromised websites and link farms, suggesting an attempt to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate structure designed to host many links on disposable hosting, further supporting the phishing or malware distribution motive.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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://queure.ru/uplcv?utm_term=pull+the+pin+meaning PDF link annotation
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/dhap1ho7f1f1qcjrhlg35oemuv/gisomixekezaza.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/81920473955.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c246722bba6---dawatimifokekalokawuj.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/224a6f673349d6adbb47d326195b2b6d/kulogevozupodomesoti.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/brgb0fjv3c9b3iatmceh3eql7f/legamiberefabedanaxov.pdfIn PDF document text
    • http://119hero.kr/userData/board/file/66340614420.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/d47f6350f98904606ed2cc48a6691380/55842073601.pdfIn PDF document text
    • https://stallion-international.com/userfiles/file/nanejawubodemosilivedo.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e0b7019e2---vimegojot.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/09a303c382f21067305272454b6a0cf6/rizevoguvoxinuvepopezepow.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f795149de---12436087401.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/ef75dfabf54da4975cdf7d600d34963f/68716672886.pdfIn PDF document text
    • https://callalilyvn.com/upload/files/pumame.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/cc0cee580be2f5c1bb81dad43d0e07f3/pikonebun.pdfIn PDF document text
    • http://brightwayconsultancyservices.com/userfiles/file/57923143239.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba55e08f8e---wipafub.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5def5e1e26---piwikisusirupapadejij.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/rukosalurusejimanut.pdfIn PDF document text
    • http://seamacros.com/upload/file/39289669442.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/9a0158b8b046275314c2a03f3e440f5b/8326428765.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3dab90b50---muwesodomirinilixigos.pdfIn PDF document text
    • http://daehwa.info/uploaded/file/54496154702.pdfIn PDF document text
    • https://digireg.se/upload/dozogakerisatenidawi.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/34c434df22fa470f95c4556080d5f54f/vijawazo.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/sisinakexidub.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/b6fac5df55e1cf46abaa73440c6e562d/gajofofet.pdfIn PDF document text
    • http://polyalpan.hu/_user/file/rimigarewixonukonekadobe.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_off00010f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F67 10412 bytes
SHA-256: ce6691d229816c023691df9a66c934b28934b4a488323fe32b3dc0bd8623d54c
font_01_sfnt_off000126b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126B9 18708 bytes
SHA-256: 60055244dc893a377b6023a9518b802534b94865b05c5b930610d00958f02e7b
font_02_sfnt_off00015749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15749 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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