Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ea88f88d7ab339…

MALICIOUS

PDF

115.3 KB Created: 2021-06-30 04:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dc7ec3f3cc60091b91702e2ff04315e6 SHA-1: 3cc3cb87ca019d96323ecdb07d823c84c298cc1b SHA-256: e0ea88f88d7ab339a0dbe8b287c8a9ad68e73fe3de79f116f36cd038c772f82b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to compromised websites, indicating a link farm designed to redirect users to malicious content. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this phishing or malware distribution intent. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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=color+all+external+ear+structures+yellow PDF link annotation
    • http://buildinggodskingdom.com/webcms/file/pemisumofeporopapi.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e839f63a04---rokakojuluzuzupetixuk.pdfIn PDF document text
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/79627094499.pdfIn PDF document text
    • https://alice-immo.com/userfiles/file/reluvasamurupirono.pdfIn PDF document text
    • http://dentherapia.hu/files/file/vigoxerenu.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/buvorodugesiw.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/73940608300.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/59797812294.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/e22f9b67667e8296a03f0544dffa47b5/5163059415.pdfIn PDF document text
    • http://moscowprice.com/content/xuploadimages/file/gudoduluzivari.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088231d4045d---mipinetinetidu.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/3ticuf3phjdo6773fjip5d11bc/jizakedazukimoza.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/mudokawagovadanakupe.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf9999cb71---napoxisenafikudemilevi.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/pbnv9i18d8v0ijdkm9baqdpoh4/voxezimetupumo.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/e156aa3f9b80752b9e19f971253b5d34/27689629644.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/8c3qqp7ds1i51fcmknd54fi8tb/sazajeluxoxag.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722e7191936---xuxifopujagagujumeki.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a758892b316---80865541899.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/c9039c33fa6c4f390983543e7da09906/4139758176.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/sprlkiqvrj5v4uitq4fiqkig0p/letedikobubabiwalalubik.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f9d678af9---74118254116.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/15263008644.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_off00016234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16234 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00017a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A4B 10564 bytes
SHA-256: cc951ea5187abaff0568ff146629d3d214835bdea783ced67a65fc328af7c4f5
font_02_sfnt_off000192ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192AE 17280 bytes
SHA-256: 3e41d243d1213c074408943fe66c5a9aa1fb868a2775c2d063b4109030a5243f

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