Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6e2f96c0698589…

MALICIOUS

PDF

114.0 KB Created: 2021-06-26 19:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 07988b527742f2aa44919483fc4a6e7a SHA-1: 10dc972e6de89e81e0d8cf1c13a5db36182e65e3 SHA-256: 6f6e2f96c0698589b3c0f9b49839c7eecd58e950b49b43d312fda8243aa5784c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links pointing to other PDF files hosted on various websites, many of which appear to be compromised. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates this is a link farm on disposable hosting. While no scripts were explicitly extracted, the presence of numerous external URIs and the ML classifier's high confidence suggest malicious intent, likely related to SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/14de1835d96aa9e2c78ee4d950c4a4ee/gawomam.pdf In PDF document text
    • http://banghetretruc.com/media/ftp/file/66250104828.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/32173556984.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b24268ec381---72508443790.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/465a97b9434a24c529243c9b04f1e0ff/lejovopolopuxazoj.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/75286709531.pdfIn PDF document text
    • https://gyandeepjkss.org/userfiles/file/22075528655.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/29469923274.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/0ecbe6148bfc2374ad5dd93c3d1cc2f6/77385498226.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef7e16e330---xabesu.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/13998168909.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/15e4e7555972d07e602e327b65dd6235/17426169392.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090df18530b5---ridofototekumigositizizul.pdfIn PDF document text
    • http://dienvietbac.com/uploads/files/78332823521.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a51c372aa---37963052256.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1ab813128468d6b56c7cfebb1c92c3ac/89578074619.pdfIn PDF document text
    • http://apvn.info/userfiles/file/43352348809.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d317ecd76c---92057196350.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/wanugizaxet.pdfIn PDF document text
    • http://worldprint.su/userfiles/file/22031285510.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d309d3375e5---gikepigosiraludewimukasu.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/towutibogefowevuwewamuvo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=in+an+octahedral+crystal+field+the+t2g+orbitals+arePDF 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_off00015909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15909 17896 bytes
SHA-256: 33e68f227d5d5a9d8651447ab6b635dd194dfac2803d5dc107ff199f0c748e23
font_01_sfnt_off00018881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18881 11080 bytes
SHA-256: b2ba8b91e50313bb98ad1e445c69f78d95ca8ddcf843f70af8c66e35182a4467
font_02_sfnt_off0001a224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A224 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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