MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by ClamAV as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://whalesart.com/uploadfile/file///2021062501200968.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b58a8b1f409---13623838710.pdf
- http://fitviewer.biz/files/file/fenutawojuxenujewosa.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160945cf1ceaa7---dapik.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b41f9b8af0f---disiridozovibixela.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6f25c3ccc---84071489511.pdf
- http://anhbanglaw.com/userfiles/file/tekowemukedogetepewawov.pdf
- https://gionggiacam.com/ckfinder/userfiles/files/venemanelek.pdf
- http://matsonconstruction.net/userfiles/file/57183865392.pdf
- http://ottotech.center/userfiles/file/80681489358.pdf
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/e84ea73d88c9f40b18088c599b50ed4d/tusiw.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160abf48a56309---newepo.pdf
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/22716958b4b1b4a4ebb96b2515363610/62128544891.pdf
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/l22nu9bi5uqt1opq8elgkmr6t1/20994443556.pdf
- https://holocaustresearch.pl/nowy/photo/file/kumunojudalejimutazatu.pdf
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9d4126c4f---3248732733.pdf
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160afdac24b1c6---74521600799.pdf
- https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/cd4640415434cee15ab65e5fa449e924/faguvatiniwizerimomus.pdf
- http://ersatzmonitor.de/userfiles/file/30915344649.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084244d56660---pakulalokamakumem.pdf
- https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/b28ee839e916938c9ed5acb7b9332112/lugosonufegelalusikasov.pdf
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/f3855d8fadcad501b8660e8cbe9bc7b2/bolavuzezufudipena.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6ce35de2be---41438318762.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=getting+to+st+pierre+and+miquelon
- 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_off0000ed4f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED4F | 16792 bytes |
font_01_sfnt_off00010561.bin76b64176671036d5427a33d985ceb148805c34b15579287d9f440dbbd6ddb68e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10561 | 15912 bytes |
font_02_sfnt_off00012e2c.bin98de93927a891f53ff17cf44b877f013c7e3de039c9cb74e9539386d30ae2145 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E2C | 11020 bytes |
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