Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade5e91c6357e249…

MALICIOUS

PDF

90.2 KB Created: 2021-06-29 03:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 694e8a52344d6dc173ace0ab8aed0b7d SHA-1: d62beca480144466cf5d74f96b500247d3d01754 SHA-256: ade5e91c6357e249cd52183ee84b28ac819d71c3ea9cbe4d69bc9e34dfedd7cb
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. These links likely serve as lures to phishing sites or downloaders for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

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 http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed9ca64d87---pafedevubukifax.pdf In PDF document text
    • https://mfdesign.hu/files/file/powukepijipufinedipatajox.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d67d5b5bcc---jitalabe.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/rekifuzufijukofelunor.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/sotatulawidiwejiliwi.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/952fl4sghp5iiam8lhbfrkbk1s/70178599770.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160798f677bde0---3582611386.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/wipamasolapumazopufoso.pdfIn PDF document text
    • https://salvamontbihor.ro/app/webroot/files/userfiles/files/54363779036.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16096a0f3c39c8---76816383557.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e221bff53---lupis.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/vibuwo.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xoxunamagipafopimesejudev.pdfIn PDF document text
    • http://homestationrealty.com/userfiles/files/sabokopitijifikak.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/39547106555.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc13e95780---mamurimetowu.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/96266241414.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160824e36344da---48530714014.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad666885ba8---sutem.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/f2122955c9d230af8d379d33f24fb3cc/39436568161.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/df86a91b5ab9a52d382b93d6bc641e3b/82144335946.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/a9vf65givi42khus3d7ribq583/39906895395.pdfIn PDF document text
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/u00ev6vaeajf04jcq7a0fhmtf5/nenof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=file+for+ppsspp+goldPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AC 16396 bytes
SHA-256: 45647295bf3e6975917d2c46c854a2f040b6d2f4fa9dfc4d8f9276b78401693b
font_01_sfnt_off0000fedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDF 10284 bytes
SHA-256: 3ea6d4f3d07905afd17b75e65c2670832750629944ad5e8377cbb518d566b93f
font_02_sfnt_off000115d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE7 17372 bytes
SHA-256: 8e2932363b85cb4b643f35e8b866293ea895a34f557428b7ba9e7012658c33bd

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