MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious. The presence of multiple compromised CMS upload links and link farm characteristics suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 5
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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://pistant.ru/uplcv?utm_term=lab+activity+types+of+chemical+reactions+answer+key PDF link annotation
- https://twr1115.net/files/fckeditor/file/gekewufadoxos.pdfIn PDF document text
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/k1q34atdkfpbvk4ql6sedi9j61/21328912685.pdfIn PDF document text
- http://starwindows.ie/ckfinder/userfiles/files/99939945702.pdfIn PDF document text
- http://apsara.ru/userfiles/file/wigemunafozerimomiju.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16079bd20e7e82---29942342850.pdfIn PDF document text
- https://tramtron.vn/uploads/files/files/97516882438.pdfIn PDF document text
- https://alatheir.com/atheirwsfiles/file/79249840175.pdfIn PDF document text
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16082856227b58---20998273063.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825a9f6a1a8---ximovaxonijuvavemisu.pdfIn PDF document text
- http://doorsatyrau.com/ckfinder/userfiles/files/28126902621.pdfIn PDF document text
- http://spbmedax.ru/sites/default/files/uploads/begujetemasex.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608635b6efd51---kixigebapujopavigoxa.pdfIn PDF document text
- http://bfr-bialapodlaska.pl/userfiles/file/30259375370.pdfIn PDF document text
- https://tidurmalam.com/contents//files/55771378710.pdfIn PDF document text
- https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc8609f180---movowisupefalarapem.pdfIn PDF document text
- http://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/71822099722.pdfIn PDF document text
- http://ildungrice.com/fileupload/fckeditor/file/pevonas.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a3097a769a6---xafamunesuxebaner.pdfIn PDF document text
- https://cezartravel.hu/userfiles/file/fosipekarudigutufoja.pdfIn PDF document text
- https://actor-conseil.com/files/file/46373411705.pdfIn PDF document text
- http://blackshirts1962.com/clients/f/f2/f245580d3072b78cda2271cf7a7e3f61/File/10143370976.pdfIn PDF document text
- 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_off0000ce78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE78 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e68f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE68F | 11200 bytes |
SHA-256: 2d5e7f22c7dc44a3832df341af1c95d2f1becaf84ddd6e75c0a436a820a5f201 |
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font_02_sfnt_off00010079.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10079 | 16256 bytes |
SHA-256: b6cf16d20356d94b0b5fd2617f009b2b207a92396b747c4b5bb2739101b1358e |
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