Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e80439a020690aa…

MALICIOUS

PDF

90.4 KB Created: 2021-06-27 23:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 39834bd6599f70616cfebb010de74fc1 SHA-1: 38dcbc3f50b0d67cc1b32431450b33111db6e846 SHA-256: 0e80439a020690aad8c84d9fcef8e990d800479df0852f5fc496d8d21f9e98e1
96 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised CMS upload directories, indicating a link farm designed to redirect users to malicious content. The ML classifier strongly suggests malicious intent, and the structure points towards a phishing or malware distribution scheme. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 5

  • 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://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/517379b82ebc15c341e9156d53eabb5f/vazadojevakevipixi.pdf In PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608872d76b521---votipolaxaxizara.pdfIn PDF document text
    • http://midel.me/userfiles/file/37164985400.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/d9712188a111efffdae83028547d18c2/lesefik.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944e7070725---93069448415.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607e42bb10ad9---62384828719.pdfIn PDF document text
    • http://infinijewelry.com/userfiles/file/22540655400.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/dajisar.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16088bca14479e---46034299029.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/bajozewepadamivu.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/2252647768.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/telokavusitobekodafil.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b13d03e507---72446388201.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/n40voqlnut6hk97r00hpkd35av/bubolorul.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/ee227da47ad5b0617e2b056aa465eb8d/toduzuxij.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/11254457374.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a49f9d7a645---woluparipidatitudo.pdfIn PDF document text
    • http://klefmarken.se/upload/file/tolakidibuki.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/19752589645.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16072b9127cee3---lojoboloxosisosamoborato.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/geldvju4voldt9p0gn6k4d2ik1/2809409321.pdfIn PDF document text
    • http://mlight.cz/archiv/file/83843174523.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/d7faa6f4b03c35e17602aebe9768a6a5/91955247.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+make+persuasive+letterPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAF 10644 bytes
SHA-256: 377a1fb7c0a16312567d5ab396501367bb28551e259194e40f1bf70571b6f6ff
font_01_sfnt_off0001181e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13030 17108 bytes
SHA-256: 582b2d736e5a4a81e9cedb478a627454faca9998870e5b9eb0d9bc6793edf1c0

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