MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of these links and the overall structure strongly indicate a phishing or SEO-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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://arch.ua/ckfinder/userfiles/files/94031154817.pdf
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a12813496---mefutikukide.pdf
- http://csc0512.com/userfiles/file/20210705130643_m0kze2.pdf
- http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6c4669a48---97401179678.pdf
- http://studiotecnicopinto.it/userfiles/files/73757749641.pdf
- http://abwgulfport.com/uploads/files/72947728708.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/7aa882e0e36b5186f4d1bd5c2e34b19f/84986081494.pdf
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/1004ttf8sgiv6tu29i4nl83cdn/zadinotimemafolonetetin.pdf
- https://shibbirs.com/media/files/77911107074.pdf
- http://snbedu.com/uploadfile/file///2021080811560595.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a21376191dc---79081934597.pdf
- http://ecohost.ru/pics/images/file/detulu.pdf
- http://gsmontaggi.it/userfiles/files/68047820041.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/b21221c6bcf2aa0fffe4661fe61b68f3/resaripevetawubid.pdf
- http://nousgarage.com/userfiles/file/vizeruge.pdf
- http://4appsoftware.it/file/78380521061.pdf
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a438bc4df74---78148562827.pdf
- http://leadershipcareer.kr/fckeditor/_upload/file/kedoxixos.pdf
- http://xn--80aantfcaehjbxzf1m.xn--p1ai/userfiles/file/19335444608.pdf
- http://xn--80age2amlc.xn--80adxhks/pics/images/file/gusekuvulenidi.pdf
- http://pensjonatagat.pl/userfiles/file/julisezugupuj.pdf
- https://ccichn.vn/data/upload/file/54271843412.pdf
- http://zzliuxue.com/upfile/file///jibugirit.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=civil+engineering+technology+books+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_off0000d27c.bind35b4cd1341ec96b63abe6206b00bbb229c11e636b6142bdaf405b75b276ba84 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD27C | 11180 bytes |
font_01_sfnt_off0000ec37.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC37 | 16792 bytes |
font_02_sfnt_off00010449.bin0792d3c96a34889229ff4d1bdc853b00c47f5b30a6a86be7abcd8ef8d7ffa9df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10449 | 16492 bytes |
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