MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other domains, likely to lure users into clicking malicious links. The presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest its purpose is to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://synerhu.ru/uplcv?utm_term=binomial+distribution+calculator+with+n+and+p
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b00ba40db19---lejanoxez.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/28ba3bfa5517a35fa34c2b07ebf00476/15802734188.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/ecc2526c6337374870baeceafe1bac09/fixigatifubuf.pdf
- http://castrolmintabolt.hu/images/upload/file/38135189664.pdf
- https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ce69de3bbe3---danoradab.pdf
- https://giriconsultancy.com/content_files/files/42762178432.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c5a0ac1ae9---zoxera.pdf
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/q9sn6mvahseqgk1ht3vk37111q/19211788476.pdf
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16077572a02ad6---xirulomopegipugusu.pdf
- http://dzbnf.com/upload/file///mitima.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702c9e902c3---nimitu.pdf
- http://robertfeinberglaw.com/images/edit_images/file/dofuvudakinirafi.pdf
- https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/ubkdtvrnmtg2acsfmb2nckoad3/90426093983.pdf
- http://ncabhsa.com/clients/875427/File/mefudikasaj.pdf
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9csfcj4a7lqlgdoc0ahkluadd1/rufewenabineb.pdf
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/a9eafe2569de5de99fba5c915cd00705/kadexevevowif.pdf
- https://coil.hk/upload/files/72690111700.pdf
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/c27aaa559659433a4b4f677ed8d54108/dudevu.pdf
- https://pharma-tools.eu/galeria/file/51389614398.pdf
- http://lungtransplantopen.com/clients/d/de/de7cc03d42bda6b8b84c8ac9728529bb/File/gorifaborax.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aa648b2efe9---lojepujaxoxi.pdf
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608afe47d0b9f---2632966448.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073d3d48de4a---15233855038.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_off0000d555.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD555 | 16792 bytes |
font_01_sfnt_off0000ed6c.bina1918552876318bf7fc57db3d59d7a932c97f69e1face8a462dcbe5da1e5424a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED6C | 11024 bytes |
font_02_sfnt_off000106b1.bin40993a27499d1432a25a2afb4593d0117e05e2655d4aa3231f9ee81d7c97b849 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106B1 | 17444 bytes |
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