MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It functions as a link farm, containing numerous URLs that redirect to compromised WordPress sites, likely serving as a distribution point for further malicious payloads. The embedded URLs and the nature of the link farm suggest an attempt to lure users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://laborke.ru/uplcv?utm_term=destination+b1+pdf+book PDF link annotation
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/m9flivj8dle85uu5rqd832o0vu/53433400197.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/559d49447980ff36fb5bc75f48ff4444/dafewidapunazejawupog.pdfIn PDF document text
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c227990d76e---30179150566.pdfIn PDF document text
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608a69c274b8a---sajavidigabulelevaz.pdfIn PDF document text
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160789c7498987---dajasapinuzusoraduzozamiw.pdfIn PDF document text
- http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160853f5f0ae64---55606923222.pdfIn PDF document text
- http://ahkjt.com/upfile/file/48537485235.pdfIn PDF document text
- http://studioriggio.it/userfiles/files/88188743314.pdfIn PDF document text
- https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/777ea6a0285b93ee7574939eed45a8ba/15341395591.pdfIn PDF document text
- https://bandotrading.com/uploads/file/wunewefigivujidivajow.pdfIn PDF document text
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab9fc10b48---28619202695.pdfIn PDF document text
- https://www.cittadelmiele.it/wp-content/plugins/super-forms/uploads/php/files/356710b89b6ac643c2bcae07ec7d12c7/lixurujitokifulutubobakuv.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0c6229f5b---sivefanixajoto.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8e557cc74---soxabedawuk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e03c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE03C | 5164 bytes |
SHA-256: b72a947b590a73aa377ea72b12d25b776485b63742ae87d99a58a2a1c8277af9 |
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font_01_sfnt_off0000f1e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1E9 | 22340 bytes |
SHA-256: ffd3f1fcb6d57d64bf2b0ee5f65c53a10593f58fe02fb0a35f7bec65cc666e52 |
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font_02_sfnt_off0001251d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1251D | 16220 bytes |
SHA-256: b81a7a047587ccac4340a067b9b64dc219b3cba1e17a529e4216b498cc9c4105 |
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