MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to a variety of domains, many of which appear to be compromised WordPress sites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly indicate that this document is designed to create a link farm. The ML classifier also flagged this PDF as malicious with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://nomylo.ru/uplcv?utm_term=pulu+meaning+in+english
- http://sevoir.hu/uploads/file/91560395725.pdf
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609c58ce997c9---zusupomunawupubizelutitug.pdf
- http://xboxheerlen.nl/userfiles/file/69090804694.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa25222049c---85747427482.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ebe66258d---damuralun.pdf
- http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/007o1tfppbu7qnc99n5dig7i52/jenojatukumotemip.pdf
- http://ruoumoc.com/upload/files/94290816249.pdf
- http://keralabiblesociety.com/fck_uploads/file/15137883523.pdf
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/80d805d083440361b8aeb8c478c30e45/ravexukojodowuvafazor.pdf
- https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac223202f26---7904023076.pdf
- http://phukhoabacninh.com/images/files/48827194660.pdf
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607591dd4642d---27173977145.pdf
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/bd9b6d3f62a62ecb0b02b1b1648d3fa4/ratebopenekanuwa.pdf
- http://casaalu.com/luutru/files/xarinusexukuzipele.pdf
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/1s79opp86jlfj6jq4h59q8vu17/rowovazapam.pdf
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/44a7f43a371ea79406cd419a0b128cd3/76527393346.pdf
- http://hill-macktribe.com/clients/7/78/785e88641dcef8d5cadf71fa969cae92/File/51125039119.pdf
- https://mangonebike.com/uploads/file/76799964236.pdf
- http://aelma.com/sites/default/userfiles/file/sazevasinujaniz.pdf
- http://oodow.cn/upload/file/210705050853099016d4764yercv9c.pdf
- https://anjingliar.com/contents//files/40694607311.pdf
- https://shiokuda2.com/contents//files/88657403974.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_off0001341f.bin22b56a14d9a382c74cc4a452c456d5dd62c5421632cb5203312a0ecd0cf41e94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1341F | 10336 bytes |
font_01_sfnt_off00014b2d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B2D | 16792 bytes |
font_02_sfnt_off0001633f.bin874bf0f9f1580effbdede6cadaf4c3ca9603e89c7924ec852e17a0186e0c89f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1633F | 16772 bytes |
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