MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but likely serving as a container for the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://bigband-ulm.de/userfiles/files/6248324121.pdf In PDF document text
- https://alexandrapanayotou.com/web/images/static/file/sosunelepipi.pdfIn PDF document text
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/mkttaoa4q0bbsj8b5030p3dq01/dadunip.pdfIn PDF document text
- https://a-pointpro.com/cms/ckfinder/userfiles/files/vuligumegarujaso.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/27190cb1d71e959fa8a13b337348bf5c/68338704029.pdfIn PDF document text
- http://artospace.com/pics/file/napugaruwepolimiboj.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1cf746bc2---5692287198.pdfIn PDF document text
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160afb6a8ba525---nodosifowasetijosa.pdfIn PDF document text
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160fea9af3c0a2---jorilaxavumodapikiw.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/bca1f47eacc044478a8aee977e5dbc3a/wufuwuguf.pdfIn PDF document text
- https://prana.video/wp-content/plugins/super-forms/uploads/php/files/ukgdm1pn86hi5oto6hdgkpmqvp/31329172229.pdfIn PDF document text
- http://scro.ru/pic/file/fibatonir.pdfIn PDF document text
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/2285c26612a59ba38127f5d3dbb8485e/jojanarosabakukisi.pdfIn PDF document text
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1606f689b2e4ba---87025123287.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098905085687---bonanunuxopevuzunib.pdfIn PDF document text
- http://sochistandart.com/ckfinder/userfiles/files/78004513447.pdfIn PDF document text
- https://tutorsbureau.net/userfiles/file/21463483355.pdfIn PDF document text
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/c8ae4e2a17395aa3da2c65c2d6c4a306/25620918137.pdfIn PDF document text
- https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/rncco8lbmt5oka2v8ac4nooj54/90534658697.pdfIn PDF document text
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/fb04a179d6754a98ada7f76132ec5a8e/vetipijexinozesa.pdfIn PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16072daff06665---40701268601.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7ca05144f---dalavakedada.pdfIn PDF document text
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/ce8f8aa156223b10095f5b82d029478c/surafowoxexamowiriwiriv.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=state+separation+noticePDF 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_off0000c2fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2FD | 10396 bytes |
SHA-256: ed1d3c982d92613902861e162752e1b17763028dfd9c3063d4bd392436952c01 |
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font_01_sfnt_off0000da97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA97 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f2a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2A9 | 17316 bytes |
SHA-256: 4688eb1782818a7230ab59a902075491c63c29142c7ebbf978afbd5afebbd293 |
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