MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple external URIs supports a pattern of redirecting users away from the initial document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://krisoc.ru/uplcv?utm_term=managing+oneself+ebook+pdf PDF link annotation
- http://doks-films.com/pcms/content/file/52942047045.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/79416997749.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/00c9d89ea303fbf9c8f7f6266150f7a3/59866691305.pdfIn PDF document text
- http://avstralianature.ru/ckfinder/userfiles/files/vegazurijijekibedokorovu.pdfIn PDF document text
- https://adrfarysz.pl/userfiles/file/pijapanubometupef.pdfIn PDF document text
- http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d613871c4a0---wuxikutemopawinaxer.pdfIn PDF document text
- https://bikeid.net/ckfinder/userfiles/files/mevev.pdfIn PDF document text
- https://baxsporthorses.nl/userfiles/file/2613851718.pdfIn PDF document text
- https://briljant-maleri.se/UserFiles/files/vulopuginidosesanuk.pdfIn PDF document text
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/caef243a8d20c541a553167f4898599f/lavixibupefuvomuran.pdfIn PDF document text
- http://ailizia.com/userfiles/wiguninezamiz.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/e41ac189647a13c5c66ea6382f493ead/10560183532.pdfIn PDF document text
- https://vipbeachhouse.com/uploads/editor/file/91783777978.pdfIn PDF document text
- https://clearpatth.com/userfiles/file/97709434975.pdfIn PDF document text
- https://paeonia.ch/userfiles/files/27032629474.pdfIn PDF document text
- https://caffedisanto.it/file/69106938916.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608370cc9e076---49152087193.pdfIn PDF document text
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/7e4c6ddc91b16ca1bfc3eace27c19f86/sifomajeka.pdfIn PDF document text
- http://bmcsteel.com/uploads/baiviet/files/98427075540.pdfIn PDF document text
- http://matchedtubes.de/userfiles/file/79867226649.pdfIn PDF document text
- https://shrisaiexport.com/lightspeedweb1/file/70578780133.pdfIn PDF document text
- http://rogersdesignhouse.com/uploads/files/47330446047.pdfIn PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608915c8e2195---fefowinim.pdfIn PDF document text
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce5416185d---92544951619.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_off0000bfa7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFA7 | 20888 bytes |
SHA-256: 7a78e1e3946fb1be8285985ff3b8dd5e1be6fdefada8f415985d30c68eb7e2bf |
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font_01_sfnt_off0000f5e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5E1 | 10700 bytes |
SHA-256: dbac08436dfdfa716e5335177b02171e62f00d402ca960453a97ccfb2bb88bd0 |
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font_02_sfnt_off00010e1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E1B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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