Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c08bedf8818d5ba…

MALICIOUS

PDF

84.6 KB Created: 2021-07-04 08:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eb40868b656a9de5dfadb8c21e930c9c SHA-1: b455d9154391f392e355f074d87efb951ec9c5d8 SHA-256: 2c08bedf8818d5ba2d388aa090251a99cbeed87c20091d76e036fe81a49a26bc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and link farm heuristics suggests the document's primary purpose is to redirect users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://nomylo.ru/uplcv?utm_term=555+angel+number+love+meaning PDF link annotation
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c84d0a4aebb---gonufavagewitupob.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/juu04h26qfe668r0ehe3rct31i/5097095135.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/8kbva26dgucvigoss6qm31pev7/depejafawewajemozafegaxo.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/65471946075.pdfIn PDF document text
    • https://kristinanamaste.eu/files/wamirovi.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/b7fc07d42a654fa3085ca467f0054f3e/tevonotinugamenanupulopi.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16082325893fd6---rijiweferogofunuge.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f09484035---sinozodimeromifujedejajek.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c65d1056e34---panavomarugub.pdfIn PDF document text
    • http://studiobaliva.eu/userfiles/files/57818156101.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/gekezuwobazasazajixa.pdfIn PDF document text
    • http://strandedtattoo.net/file/vorupivimixijaro.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077dbc015ff9---gajumura.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/darigivobukapamifoxad.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803c5d20324---vogitegisowokoxuzu.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0744e6a3c---puvabas.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/vegogifim.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/5vkgqjtv36fo9499sophchpjak/41805081919.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/603a422d2f0a2ffd84b1c2c162662657/renuliroxad.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830c819c7e3---likapofisi.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ff2831dd1---16249965141.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/wuwabevumun.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_off0000e85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85B 10528 bytes
SHA-256: 9df598c35adf3f80542acb9ad1f28f12b708327dc01e9aeb63e4d730fe9388c9
font_01_sfnt_off00010041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10041 16760 bytes
SHA-256: f68e9256a3c623542062feccfb659d11043354a259e661b1c95cbf3c6e9cd663
font_02_sfnt_off00012b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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