MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The presence of external URIs and link farm heuristics strongly supports a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://hichipper.com/hichipper/uploadfile/file/2021091105265673499.pdf In PDF document text
- http://pcwenhua.com/uploadimg/file/1630522288829133692.pdfIn PDF document text
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16135bb83c3cf0---magimobirafajevon.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/ee49779f29259ca7cc6e31b96c51d39b/30139131992.pdfIn PDF document text
- https://hunghiephuylog.com/upload/files/26825162252.pdfIn PDF document text
- http://pokrowce-ochronne.pl/Upload/file/gidaduri.pdfIn PDF document text
- http://pxmonastery.org/CKEdit/upload/files/jigusogesafel.pdfIn PDF document text
- http://studioindelicato.com/userfiles/files/sazipazolalulodewaxalu.pdfIn PDF document text
- https://sofahatinh.com/upload/files/kejiwoxo.pdfIn PDF document text
- http://aotwcasino.com/ckfinder/userfiles/files/lobogowuvewibozutefuwuben.pdfIn PDF document text
- http://thsport.dk/ckfinder/userfiles/files/dimopolunoliva.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/4jegnjbkr5ghlis2unnqc7vf5g/sebigasitaramil.pdfIn PDF document text
- http://harmonie-avion.fr/actualite/files/90086114770.pdfIn PDF document text
- http://ventss.ru/userfiles/files/87068190344.pdfIn PDF document text
- http://yossy.biz/userfiles/file/wozuxutofejerububojuru.pdfIn PDF document text
- http://ndc-group.ru/uploads/files/zixunijisiwu.pdfIn PDF document text
- http://chinasoftcore.com/userfiles/file///51292100549.pdfIn PDF document text
- http://morard-mcf.fr/data/Files/51118775110.pdfIn PDF document text
- http://keralastatetailorsassociation.com/userfiles/file/vumemuxebizunezemevab.pdfIn PDF document text
- https://manorhair.com/uploads/files/202109100956171346.pdfIn PDF document text
- https://alpinashop.rudy-ra.com/files/11217773853.pdfIn PDF document text
- http://zatacorp.com/upload/files/84424643558.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=watch+angel+has+fallen+full+movie+onlinePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b1b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1B1 | 16488 bytes |
SHA-256: 490a2273b6686a65d039fb9ae9b988a96306bda89c2c9bb7ddc4269a883072a5 |
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font_01_sfnt_off0000dc63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC63 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f47a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF47A | 10844 bytes |
SHA-256: 67dec42946d648fd3ab1880ae42a475500f1ec73fe302b8fffcff0499c1832ee |
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