Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae8d39249bb2e6b…

MALICIOUS

PDF

85.2 KB Created: 2021-07-12 23:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 899495e4ab00ef1d2187f370280ce22d SHA-1: 839ef90239ab13580e36c088ca5c08bcba867950 SHA-256: 0ae8d39249bb2e6b1eb38eeaa335a7c4147d2b00b1bb0161889c8d25bc46ef42
156 Risk Score

Malware Insights

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

The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to compromised WordPress sites and other hosting, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads.

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://wastran.ru/uplcv?utm_term=make+candied+cherries PDF link annotation
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/db8804389af324b6617d073ee86ef486/wuvisuxamejesir.pdfIn PDF document text
    • https://rieker-consulting.eu/files/file/45545440442.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160879963cc5b7---mopafosifizu.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e963ccc57---79495544588.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/7e1ed6b23b9e58c32d2db460819a8783/13318209246.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/guvotopedowolazirowivom.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb6b037f8d---gozifelazagapomafolut.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///77389948995.pdfIn PDF document text
    • http://breakevenpoint.pl/uploads/editor/file/zasemiwulu.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/kebigupirug.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16072d4922f247---96143846696.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720bf887d9e---sisafeduz.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/60958868795.pdfIn PDF document text
    • http://haai.org/upload/file/pujobemen.pdfIn PDF document text
    • http://trlgpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pakefisuxug.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/770e9003a9b4090066280ad2fa59682e/57861289291.pdfIn PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/17051c55e1b0f3663158b17e0ba9f06a/53310371358.pdfIn PDF document text
    • http://doyen.cc/images/upload/File/84422725968.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608626e3278dc---84230070357.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/lipkfhjkrn3s2fkthgdhi0qph4/meposigumalelidepefaga.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/vezoguvutoxo.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/finabuvaluxigatosum.pdfIn PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/komajuna.pdfIn PDF document text
    • http://seigyobannkaigaikikaku.com/ckfinder/userfiles/files/vupesofiwosaxamido.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/6fef7844560e09694c6914ed8842a8c1/90914192557.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_off0000eb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB15 10288 bytes
SHA-256: eb95808b4f7d42ef3ca762dadea59217fc6419c8631430dd7b4c46b6079d1e1e
font_01_sfnt_off0001021f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021F 17480 bytes
SHA-256: 6f56c9646a34e4da19c3a40a7c8313c664722495961bee7b354cc6ac6c51d7ee
font_02_sfnt_off00012f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F99 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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