MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous heuristics indicate the PDF functions as a link farm, directing users to compromised WordPress sites and other disposable hosting domains. The embedded URLs, such as 'https://oniceh.ru/uplcv?utm_term=...', are likely part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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://oniceh.ru/uplcv?utm_term=libro+de+historia+de+mexico+2+grado+de+secundaria+santillana PDF link annotation
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/7800244a2faafa3a6b14ffe8f860bbfa/17897750045.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97ae31b8c2---64753251915.pdfIn PDF document text
- http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/8d62cd8fbdd4d53c4fcb65148d8b108b/94394830099.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607455ec7ac97---80667173273.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46654ba4b5---doxiratelu.pdfIn PDF document text
- https://hamasataccessories.com/userfiles/files/82570640434.pdfIn PDF document text
- https://aduanaldelvalle.com/userfiles/file/manavaketogizumewavi.pdfIn PDF document text
- https://palcev.ru/userfiles/file/74840811012.pdfIn PDF document text
- http://bhk-aindling.de/userfiles/files/mopugufelunaw.pdfIn PDF document text
- http://debandhelder.nl/ckfinder/userfiles/files/diwunanefopusasixapagi.pdfIn PDF document text
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16086e1037bd88---katiwefefipi.pdfIn PDF document text
- http://anandtouristcorporation.com/uploads/daveruxalafajum.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16071634c36899---golimufu.pdfIn PDF document text
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/44f34bc1538301ab25a14c4b8c35e6f9/53797392384.pdfIn PDF document text
- http://jsdarvin.com/files/bokezojasigivabese.pdfIn PDF document text
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d04e779b44---99441645235.pdfIn PDF document text
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/ea24ea086f9df7d192ff2c6aa7bee1d8/vujitejamovudomatedalab.pdfIn PDF document text
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eca6c7848e0---46505133763.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ce82ef92976---55282718875.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0afec804a---88325218912.pdfIn PDF document text
- http://hyperasp.net/userfiles/file/lurawukanuwib.pdfIn PDF document text
- http://iberia-ex.com/images/blog//file/50506763832.pdfIn PDF document text
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/10b0bdd8deca5ebb50007bd5c334b07a/9123821265.pdfIn PDF document text
- http://thanhtindesign.vn/uploads/image/files/govavuxa.pdfIn PDF document text
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/16a79259f1aea13b0256ecd973db1978/mivib.pdfIn PDF document text
- http://dietmoiquangle.com/webroot/img/files/64260846603.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000db38.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB38 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f34f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF34F | 11236 bytes |
SHA-256: 58a96776f5ca82d4ffa8693033858760c00eb9b90da8ebf1f3fde570f3ea25aa |
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font_02_sfnt_off00010d55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D55 | 17260 bytes |
SHA-256: 0b1acfa3d7682782363c032df4d5324e840d19a0b45bcbe61d88977e2b1b7117 |
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