MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised WordPress installations. The presence of 'utm_term' parameters in some URLs suggests an attempt at SEO manipulation or potentially directing users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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=adverbs+of+degree+exercises+with+answers+pdf
- http://ks-system.co.uk/ckfinder/userfiles/files/65018840035.pdf
- http://agiusfuneraldirectors.com/files/file/55381516690.pdf
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/7fc4409419645c2cc02f7d17b7f83918/jaweripinuzevowoxaziwek.pdf
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6e66e8de7---dagevemifuvuxadopepo.pdf
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/7600fe1816806d8c914a80ca45fe8c3b/38361790658.pdf
- http://clerus.hu/files/file/gojafenapexubutidilebi.pdf
- https://0900107678.com/upload/file/degonalumodofi.pdf
- https://adepotcustom.com/UploadFiles/file/20210430185306170.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/f9cec1ed5f01029304c7d1d97ea16de9/vesikeg.pdf
- http://www.sm.ac.th/ckfinder/userfiles/files/lodipodosovadenobukifo.pdf
- https://systematix.pl/userfiles/file/lexuromefutepofuruj.pdf
- https://fablab808.com/nbloom/fckuploads/file/53307622044.pdf
- http://sushiloverca.com/uploads/files/wewumaxe.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160859e802fb35---88401270938.pdf
- http://hochrainer-elsner.at/upload/files/38489163527.pdf
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/a7ec3df31c228db3d6402a7a38607dca/sutilagoliwuwoluzovenam.pdf
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/a922ece3b00ec8b1770b15ae964af584/xaxegufedereruni.pdf
- http://gk-eventus.ru/admin/ckfinder/userfiles/files/37172682584.pdf
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/c691396c9b5f6e89c570ff6452259908/15485106854.pdf
- https://alcoquimicos.com/ckfinder/userfiles/files/wexopudikafiliva.pdf
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/39fe97689942e8903d4b5118593e47dd/rinite.pdf
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a975f1d791e---91163422248.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_off0000db3f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB3F | 16792 bytes |
font_01_sfnt_off0000f356.bin86e3edc8c51795cb9abcce8451b47269a3f501ad573fabcd44d7af9636ae6ce9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF356 | 11228 bytes |
font_02_sfnt_off00010d3c.binc04507006035ccee93a03feb2b3cb89e2e09110cd1744d44eda20fa316846987 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D3C | 17448 bytes |
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