Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7c1228b09505a6…

MALICIOUS

PDF

76.9 KB Created: 2021-07-10 10:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 0d99816ab6e08e3caf828611d5949f8f SHA-1: d786ad92fa68ce7b7326c386c96f64eb16edfcde SHA-256: fd7c1228b09505a663432b9d7e42dd641e9d0f62a8d8b48f2fa03182a8c09f32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit vulnerabilities or lure users to external sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f618920ad---56528177001.pdf In PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090b3c063802---55862597021.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16081e3a785ffd---50217221286.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/26316f462a9c8270d07bc6246f687087/xepamimapogedirupovav.pdfIn PDF document text
    • https://publicbridge.pl/userfiles/file/gefokodariwigilubisosedon.pdfIn PDF document text
    • https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/a894ba1a1ad1c1484436b2a7418f3e9f/51686159646.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/84407867200.pdfIn PDF document text
    • http://envigest.cz/upload/file/wotekavamovegilewop.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/42067059662.pdfIn PDF document text
    • http://aaronandanthony.com/userfiles/files/sumoregarodepawosa.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/6fc880275106db0823ff454ef555686d/lifuzamuwig.pdfIn PDF document text
    • https://finances-canada.com/wp-content/plugins/super-forms/uploads/php/files/9e08b713b5f495ad66e0f0e5796dd6b0/80690288810.pdfIn PDF document text
    • https://asiahijau.com/contents//files/gukepitaxekevobusifum.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608159af96783---8705653681.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/jisimok.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160770e61bb925---gopexile.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d6c2086e2---giretokigi.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/piwerumajexukibevofimagep.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/h9qkk44hpm9f3v38auk6qn7au1/31555268740.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/45df635f996e5da0d4b8f74f1550216e/32828035355.pdfIn PDF document text
    • https://maconlux.lu/userfiles/files/61349320242.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/n6tp1d5ml876tbmms1h1afhoj8/92825881470.pdfIn PDF document text
    • http://domesticsolutionsagency.com/userfiles/file/25930915107.pdfIn PDF document text
    • http://sutinlawkrabi.com/ckfinder/userfiles/files/zonojizexovokevixopofuxam.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/1lpef2u65a7qu1dc1u79u7e23f/7047307590.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/gidafesosarobuwi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=advanced+excel+2010+training+pptPDF 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_off0000c8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F6 10844 bytes
SHA-256: b409a3943b892e87a3f924fe057959dea759023f9002d73bdc1536673c18329c
font_01_sfnt_off0000e205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE205 17076 bytes
SHA-256: 395375444bad1687d8dee0dfc9416d97a93fea8e6d93acb5d9372c84c5ea8ab2
font_02_sfnt_off00010e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1