Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc209c675013cda2…

MALICIOUS

PDF

98.5 KB Created: 2021-06-30 12:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ffa5e45a7f5b4a7d96f5aa3570ad2b81 SHA-1: c65801fc5e1a46fa92f2d1c571341d1b352e5aa6 SHA-256: cc209c675013cda296b951ec0c42366d6a589e0176dbfe843eef64186de8e84d
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 WordPress sites and other disposable hosting, indicating it functions as a link farm. The ML classifier strongly suggests malicious intent, likely to redirect users to phishing pages or download further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://infrive.ru/uplcv?utm_term=the+son+of+perdition PDF link annotation
    • https://hospvetcentral.pt/site/upload/file/56976482206.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/42d4ecc3d68301f57047bd1f0bc46df6/jidazexiziv.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca792b75d2---30183616384.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/471a9c62f282e86294bd4761fb82df14/gazogif.pdfIn PDF document text
    • http://minhvuongthuphap.com/upload/ck/files/68941858707.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609de54d8e105---32913867913.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2c96d4572---41308718767.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/ff6f09e7b5db65ca85b336f40e02565f/71985992929.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b4f98ff81---vuwulan.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/26907789280.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f92350d507---39921591512.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/3ilb3qg10quc9hf0870ome1p85/zogugopetanul.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/d1649bf0dd8a31e4e82ac190916ca3ac/bulofab.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/ea8f8e521064eefa0976d8ce917e2276/wirowo.pdfIn PDF document text
    • https://finances-canada.com/wp-content/plugins/super-forms/uploads/php/files/ffd956d794df246ec89f89a04de588b4/39901080565.pdfIn PDF document text
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/9bea01942ef58615bcd642311c55a472/pivigosajoregaj.pdfIn PDF document text
    • http://cbcom.eu/ressource/site-image/files/97854536701.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4fcf57cdc---89377503351.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/rfvlls3josm6k07pt9833frnjl/62267271807.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bffaaa8cb---fipiwusopunuromosup.pdfIn PDF document text
    • http://wskinbody.com/data/boardData/files/42333541088.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/47c25ca77e38cdd186e29758b3f5464e/29014763184.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607af2becaaf8---47377659707.pdfIn PDF document text
    • 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_off0000ff4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001175c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175C 19804 bytes
SHA-256: 49b420476c9b157cce02642e63a079fe0611647727668b8922def42440722ae1
font_02_sfnt_off00014ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BA5 17088 bytes
SHA-256: 0c0297844764418afcc782c60c54cd52e8a3a00e09c96037fdc13499befa06d9
font_03_sfnt_off000164d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164D7 10352 bytes
SHA-256: 27daf09daa1230318828c06472b45c7717894e5ab35c1364a2f86e0af7fcc2a8

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