Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f1dc1a1790b850…

MALICIOUS

PDF

89.4 KB Created: 2021-06-27 06:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ecee8f5c23429a23940135f3e8b47c68 SHA-1: e867234703c4aea2b2fdb73b767ccb694408ef0d SHA-256: 73f1dc1a1790b8506d28f496e15b7a23c4a9632943211a496dfcb335b520e274
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the scam lure indicate the document's primary purpose is to trick users into visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://pistant.ru/uplcv?utm_term=tv+couch+tuner PDF link annotation
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/1at832s0ithhnb8qfdm846c20m/44522183280.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/22588c3c0b098c849cb0391eaa2025d6/mupobevunodafilepo.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/244ca8240d9f812b726d06b2fa8b6b5c/90122308019.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/adf85f6d40f6bc06fe9dd4fad51b64cf/jajemefe.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5363e8038---79119107410.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/3797226570.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608771a5a6852---6095514967.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/556581d6f0a3a42267b06437f37e0879/tikel.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tizoguk.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/9e5cuqhj6js06hocijtjrfhc80/bujodazesadexabezu.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c247ce40720---77070792627.pdfIn PDF document text
    • http://changju-hotel.com/CKEdit/upload/files/31201166891.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/e75263828382c11119d66011cb6f10b8/60815954463.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/zixujikekavifuxitulix.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/7fb3dc356e920860e0a217c1474a0d94/nufenejiler.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c3a056f82e75ed4064bc681baf48eead/sogexiga.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/73gik1bih07hulndm0nn6uofc6/30445544217.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/sipular.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc6e1de486c---96458157559.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0be7c9161e---5449584527.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/bf87d4ccd9baf33cd4398497af188cd3/segufazur.pdfIn PDF document text
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/89e4b42c5420bacf69d4214e6b5927c0/manenegesopiromazex.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb8e158145d---lawemovujafigesato.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160adec1463024---fubefapeses.pdfIn PDF document text
    • http://sake2metustin.com/uploads/files/59184895338.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_off0000fc10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC10 17868 bytes
SHA-256: fabe296870cbe6f03bf7a8fd7f037dcfb52d75e4aa811850cf13f20d9e996815
font_01_sfnt_off00012b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B0C 9988 bytes
SHA-256: fc4a920624e6ffb40222ca0158e833da358eaef67da0aec1459f87c1bbc2ff50
font_02_sfnt_off00014131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14131 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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