MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to numerous disposable domains and compromised CMS upload storage, indicating a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution lure. The presence of multiple external URIs and link farm heuristics confirms the attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c0bcc3cf50f---238057978.pdf In PDF document text
- http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce7b44b123---zerolutenos.pdfIn PDF document text
- http://flirdining.com/uploads/files/72514541236.pdfIn PDF document text
- http://beiwendq.com/userfiles/file/39742229611.pdfIn PDF document text
- https://festival.bg/fckeditorfiles/file/gogifopo.pdfIn PDF document text
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf42cf56bd7---girugonabamitut.pdfIn PDF document text
- http://artospace.com/pics/file/jelevumanedafagigoxozizuj.pdfIn PDF document text
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/8a21ef40d9e9e7b54824c6caf281063d/tedewubav.pdfIn PDF document text
- https://wotfiles.com/ckfinder/userfiles/files/48781458606.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/d2eeb3bfa8d36073d57d7cb010bc185d/57588646033.pdfIn PDF document text
- http://vamaconsulting.sk/userfiles/file/71385946577.pdfIn PDF document text
- http://innotack.com/userfiles/files/pebuwetupavi.pdfIn PDF document text
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/mi02l7s2i9d8os7l6lhm89u5s7/28543701058.pdfIn PDF document text
- http://badaranquehablar.com/userfiles/files/sudaxo.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/329d20db46bb8bf288774b95f9a2e22e/98321155337.pdfIn PDF document text
- http://steelbo.com/uploads/admins/u0/files/20210701050758.pdfIn PDF document text
- https://ivanamihic.com//files/bimotexaxenimatuma.pdfIn PDF document text
- http://www.reenactmentmarket.eu/images/wyswig_images/file/tiwalodutemafopomosop.pdfIn PDF document text
- http://polyacer-ecp.com/userfiles/files/20210621_154231.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/90949544d64ded9fed93d10c4ccc281b/79122945201.pdfIn PDF document text
- https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/db22b8812b9c26f170d968d74f58af67/jakageser.pdfIn PDF document text
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160857c811e6e5---buxunujafexanakole.pdfIn PDF document text
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160844bbcacd0c---50075848437.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=hop+and+grindPDF 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_off0000db8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB8E | 17496 bytes |
SHA-256: e919aa8edde2ee77ce96901e4b549359f628a70d3c2dfa25958d9ec443afd52e |
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font_01_sfnt_off0001092e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1092E | 10112 bytes |
SHA-256: 0073a043457ca4982213324333f8b8c26ac2926879f7311a8e4eca3aef680668 |
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font_02_sfnt_off00011f7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F7A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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