MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a multi-stage attack. The PDF itself does not contain executable content but serves as a redirection mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/hfllm1clgsjidrq9ib5j6pgmkj/perixilokavipogek.pdf In PDF document text
- http://judyzscotties.com/clients/1/1f/1f1ef5c9f72ce0e5bea5babf356718c6/File/vasazegukopofaw.pdfIn PDF document text
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f75484f20764a1bf754d939ab176ee51/wekijusun.pdfIn PDF document text
- https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/f9ce397aa0adec9741381f6e178a0c54/bumugetu.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/e3189767a3c07e283c6cc9824cd97e9d/xinomonadowurajokip.pdfIn PDF document text
- http://ivankotov.ru/img/lib/file/20862008162.pdfIn PDF document text
- http://grafiport.com/userfiles/file/264213556.pdfIn PDF document text
- http://shqinze.net/admin/upimg/file///27931893705.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/7545462225.pdfIn PDF document text
- https://mfdesign.hu/files/file/tofaz.pdfIn PDF document text
- http://smart-ventures.ch/upload/Editor_Images/files/80523762206.pdfIn PDF document text
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/69e777dba9c5c3bc7d76baf1f609f28b/17043877313.pdfIn PDF document text
- http://gryfarmerskie.pl/pliki_wyswig/files/19115147809.pdfIn PDF document text
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/t37l38k1ls86q20rr0m4hpp68t/jexivolikemaj.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609a54208851a---86289324724.pdfIn PDF document text
- http://www.findvoters.com/userfiles/file/81765690323.pdfIn PDF document text
- http://hart-metale.pl/gimnazjum/userfiles/file/tekugideganisusovokopadi.pdfIn PDF document text
- http://interel-rus.ru/test/sites/default/files/file/20585415799.pdfIn PDF document text
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/6c523cfa1dc936c259f11bbb7063e6c3/87078142958.pdfIn PDF document text
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/52ec8714bf06dada66fd33a5d46573ab/pajirijuzepobidigajevadox.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608edc3c4c060---6353071576.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac23bb51dfb---baxujepadabolubozaposi.pdfIn PDF document text
- https://eurouniversal.eu/ckfinder/userfiles/files/5986752246.pdfIn PDF document text
- http://anapharmata.hu/ckfinder/core/connector/php/files/25758901009.pdfIn PDF document text
- http://wenxuezj.com/images/File/70564864110.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=different+types+of+flower+arrangement+pptPDF 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_off0000e76a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE76A | 10904 bytes |
SHA-256: 42563fd1b4a70ead040e0da967a84f2c87a119437564cc41e545968a30b6c2d6 |
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font_01_sfnt_off000100bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100BC | 16272 bytes |
SHA-256: 4b8e8607b3129e102de1100002b1bf0fa635c5580dae84a3c3fba37f5ddc3400 |
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font_02_sfnt_off00012ad4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AD4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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