MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to compromised WordPress upload directories, indicating a link farm designed to host or redirect to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload, likely delivered via spearphishing. No scripts were extracted, but the structure and URLs point to a malicious intent to lure users to compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9807
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://medvor.ru/uplcv?utm_term=and+i+thought+about+you
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609e51fe63fef---fagilunure.pdf
- http://broadviewlibrary.org/uploaded_bvlib/file/rorolozokolazuzipal.pdf
- http://agiteam.org/clients/b/b0/b0c4817036ef1cb73596cc935f3fa86d/File/kikawu.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa651f8c3e3---kopilenojakujiga.pdf
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/812a7890d6472ad788e460eb54d7e2a7/57804844299.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/38850105e0e816cd96e1868241231cf1/tajebamezakebu.pdf
- http://wecans.net/_UploadFile/Images/file/verujopiromij.pdf
- https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/de0823d0f68fb496065537038cabb48d/37660569460.pdf
- http://fipjp.com/userfiles/file/77235589802.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/b4eidsrt8569gtbvrflvf19tl3/nedafe.pdf
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0d007bfff---nebabemaf.pdf
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/978943a4d485ec7a33b5e67952c0962c/sukazebewojod.pdf
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160b20b2d3aa74---67116923589.pdf
- http://sweetbasketsbyjackie.com/clients/864293/File/33254633106.pdf
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f20e7baec9---64189339038.pdf
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/96091b2b8807d3feb9b00e5f1ff570ee/76852743752.pdf
- http://chiari-web.com/ckfinder/optimist/files/sorem.pdf
- http://aklond.com/UploadFilesfile///2021050122115451.pdf
- http://thuexe7cho.vn/upload/files/3320650702.pdf
- https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/akm39khh0ljbn4ju2bcaneqbf3/womiguwujuzepas.pdf
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16072135865af6---27467419808.pdf
- http://jncs.kr/page_data/file/20210521213054.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fdaf.bin6c520da3db3fe8bb8850281a188f4ef1d7bd8254a96045cdcc689e1f36c426ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDAF | 101868 bytes |
font_01_sfnt_off0001f930.bincce639e750d0c9489a828dd5f34cca6e7920044c210980d338ad7b7103c2221c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F930 | 10416 bytes |
font_02_sfnt_off0002107b.bina6a76c68f0dda15b3ee39f9bc99de6b770b141c9954d8784194ad8ce31b87fc3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2107B | 16984 bytes |
font_03_sfnt_off00023cfb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x23CFB | 16792 bytes |
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