MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites. The presence of an 'invoice/payment lure' heuristic suggests a phishing pretext for the links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://synerhu.ru/uplcv?utm_term=clc+222+test+answers
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d8b09cdb4b6---25501273811.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5f398e9eb---buginid.pdf
- http://deltastal.ru/userfiles/file/91215421126.pdf
- http://topcudental.com/img/userfiles/files/wamuzafegon.pdf
- http://boilerservis.ru/uploads/files/warafasixarezijix.pdf
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/a68ba28c422b03dc27e66a494114f9fd/zudaf.pdf
- http://www.ochoadentalcare.com/tacgestorcontenidos_ochoa/documentos/file/
- http://rheinmotel.com/userfiles/file/gofowadugokimapawumurez.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077262dbd147---xujutimuvazopaxekufoxem.pdf
- https://mszukam.pl/dat//file/54922928688.pdf
- http://exclusivelimoservice.com/ckfinder/userfiles/files/15184019576.pdf
- http://divorce-difficile.fr/userfiles/file/pipigax.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/ucuaqs0kme214qht6n2da8vp6q/nirikeparox.pdf
- http://allamericannursing.com/userfiles/file/bukesuzosuvimujikitep.pdf
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160bc68d43ea94---66228107590.pdf
- http://saokienviet.com/uploads/image/files/bikalifugitowuketanav.pdf
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/8fqeue1rfra48ah2ro79l944o4/63858460324.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce803dc38d---26414321603.pdf
- http://angelcabrera.com/FCKfiles/file/ruturumesosakodizumaxeke.pdf
- http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5386e88da---76575462690.pdf
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/6ca733f52c0f3dfe2223f3e8ba88c1ba/21379657120.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000132ef.bin9dd017b415785ba684dbe7853a8c131a7c22d09a081c0609ff894f78e1850112 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x132EF | 10248 bytes |
font_01_sfnt_off00014a4c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14A4C | 16792 bytes |
font_02_sfnt_off0001625e.binbd9df8d7b147d8b5aa1bdcff0944c7a6e1be8d21089cda75b9e3991ec7d2e156 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1625E | 17372 bytes |
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