Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe985b29220618b5…

MALICIOUS

PDF

87.1 KB Created: 2021-07-01 22:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d751f7d402fd780bebf47a5ab41b990d SHA-1: 40da6852fc3528791c923fbce55da4809f3b3ee5 SHA-256: fe985b29220618b53f472e0fe5d6eafef62ce4df871f714ec11a6b57edc51619
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to numerous PDF files hosted on compromised websites, indicating a likely attempt to distribute malicious content or phish users. The ML classifier strongly flagged this PDF as malicious, and the heuristics indicate it's a link farm on disposable hosting, suggesting a coordinated distribution effort. No scripts were extracted, but the presence of multiple malicious URLs is a high-priority indicator.

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 http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609c726410e64---wunabuvibijokexibabe.pdf In PDF document text
    • http://vodnik48.ru/content/file/vamubiluvob.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6201dd0869---83987211779.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a9e42f0bc---pamilovetinajexerololuj.pdfIn PDF document text
    • https://floridainvestment.cz/files/file/tomirobebotibigawifewavij.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607de8fa2fe50---benirubovizurowunag.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/223gf2mt52b3ji1e88g25ak2s3/97510838574.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/tiragodobokitopofujuki.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/u3pi4nroun5li62vi19n0rmpc1/88791108436.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/vlcc529id4a1v968cgc6c0jav9/57347456963.pdfIn PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/fovozabekerigewenafakuw.pdfIn PDF document text
    • http://asokmontridental.com/userfiles/file/vovulajipezagave.pdfIn PDF document text
    • https://bookatowncar.com/userfiles/file/87791087061.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b4344154fef---fibevazozejosomotamore.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609f29d5ebab8---kakiziravinokiseto.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c29bda8d32e---neperibixoradasuzuwitavud.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/323a6abac6a126bf2e762e5d22ed4e08/81320103013.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/bepijoxulojo.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/02e50545472d68e0d4778043939e1240/vikefisovis.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c590e4e0608---tanigetojakogozoxuv.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/e0d0db4548de87e7135364d8dffd8bd5/bulixim.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/76390bc82acb30f7a678f9ded3529abb/79158522678.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/91865790619.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/ef5664455d7d3a499e576e9fe11ca9f6/32671483412.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/81397175372.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=introduction+of+persuasive+essayPDF 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_off0000f29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29E 16640 bytes
SHA-256: 98a49c9d27445cde8d78b378111ca2941f4b2e1e61fdb1b7412d409be9c635da
font_01_sfnt_off00011dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000135e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E3 10800 bytes
SHA-256: d430f7b016cb9e37b60d30fb37ee51decb21e9b9770d4a26b8dfefc16bf07b27