Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ea81915eaeb6e5…

MALICIOUS

PDF

75.1 KB Created: 2021-07-18 20:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6292abe0f7fd3b5b7c0526b343192e60 SHA-1: 03abc286966f337d95643a3c2cc2a8552e178046 SHA-256: 11ea81915eaeb6e5a058e0744ad9af0fc09a635305476d95711daa9fda6659fa
156 Risk Score

Malware Insights

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

The PDF contains a large number of links pointing to various websites, many of which are hosted on compromised WordPress installations. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary purpose appears to be redirecting users to potentially malicious content through a link farm, leveraging compromised CMS upload storage.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7aec7f790---zevumarotajiguje.pdf In PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/dc9f3d412a831cf62f37433c7b8315c0/ximunimuratamojeluwaz.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/db6a0b70b364fbea768a2e5d2680c99c/potitamiradiwifojeki.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/4551184722.pdfIn PDF document text
    • https://vntdc.com/upload/fck/file/kolazabazaxofuxadexomeril.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/3531586811.pdfIn PDF document text
    • https://luathoanghuy.com/uploads/files/kuzulikevakasidif.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/vetonox.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0d15a70e8---89227267710.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5554d4c82---jawomobewoxubizezoti.pdfIn PDF document text
    • https://ehlibeytalimleri.com/resimler/files/30882913794.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/36f41b3471627db7dcb807b49db81729.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a6e25ef98---74500616075.pdfIn PDF document text
    • http://imaginove.eu/data/Files/40492064113.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609b796dd6d93---79948422551.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/pixubezonuzajunojapuso.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/kokadeta.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/17880234122.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b4d73bbeb59---19899524664.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/tafudujetijilavi.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/nawubazavijepisowojebe.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a004ae55d96---guvetarezake.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/83322943002.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=new+midway+elementaryPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/1392d1f8f37e09f9fd23f9546d1fd944/sulowowuzifulipupikeve.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 16864 bytes
SHA-256: babb459c312c7c2da07fa771818242188b4c8b41e4199ff57cb95788cee34194
font_02_sfnt_off0001083a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083A 10300 bytes
SHA-256: eaeb77f70ce7e70ef5dd5aa55901ebc3161fba0fd357a4b78154cf30caae69a0