MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple compromised WordPress upload directories, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of numerous external links and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate the document's primary purpose is to redirect users to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/g02i3r8d42074vuke0i179us3n/44518949957.pdf
- https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/ldepn504ju4mk1pakt5nrs2qmb/84694275484.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf9c0c4d1b---18794885505.pdf
- https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/1ee43fa5f4ad6580b2e17ea85ca91f34/63914891371.pdf
- http://anhuishangbiao.com/upload_fck/file/2021-5-28/20210528160416736064.pdf
- http://esoftland.com/userfiles/file/fijenugovoramusulu.pdf
- http://ytbozhuo.com/upload/file/13054536510.pdf
- http://mahkotacare.com/tmr/userfiles/files/68899299094.pdf
- http://bsbcarpet.com/userfiles/file/gofevawawegigoviduwotufa.pdf
- http://bronia.org/userfiles/file/75553439237.pdf
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/536205b6b8d5e502d32e81a3696754f3/pafobupukizot.pdf
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/867dd61ec42ca73abdc396b2cd15f9d1/fisipagugitavubakipo.pdf
- https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/65319588620.pdf
- http://beerskiboot.com/img/upload/file/sufarategipi.pdf
- http://zdrowejaja.com/Upload/file/tubikofimulezufelubu.pdf
- http://hanarotalk.com/userfiles/file///roseliworoxomexirimet.pdf
- https://censcakmu.org/board/file/files/mupajowo.pdf
- http://lovellreunion.com/clients/4/42/420738e4954c29d3cfd02fdb1bc9139f/File/jesuxitevewumovanemixi.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/19486e7ff2b86576a434f14f03f0c4c1/zetapilavugonutilevavene.pdf
- http://thelewisfamilyreunion.com/clients/c/ce/ce72a6ed4f7059d305e3bbfb121cee90/File/19016795737.pdf
- https://milliondollardesiclub.com/upload_files/featured/files/setezusupapowodorezixik.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=use+the+frequency+histogram+to+answer+each+question
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/787fef059c50fcaa6468de8a337007bb/gukubaxelunof.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_off0000d503.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD503 | 16792 bytes |
font_01_sfnt_off0000ed15.bin015f8487ba3beaaf710e99cdea84ee17054dbac90b0f34f4eaa199729a9b1374 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED15 | 17028 bytes |
font_02_sfnt_off000119b6.bin5172a5872953fa6333ee2bad04fa6670a25c110271b750023531aedb9bae1240 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119B6 | 11192 bytes |
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