MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS upload directories or are part of a link farm on disposable hosting. The ML classifier strongly indicates maliciousness. The embedded JavaScript likely facilitates the redirection to these malicious sites, potentially for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=watch+the+mandalorian+123movies PDF link annotation
- http://kondicionery-lubertsy.ru/upload_picture/file/9380164245.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16142ff6b93f7b---rakuxigozobadamuba.pdfIn PDF document text
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1613c29b052d29---92167630433.pdfIn PDF document text
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/161435355f3c49---5886388169.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/2t336ofvqignku9j9au9755b27/wafinese.pdfIn PDF document text
- http://tabletopad.com/images/file/41753387958.pdfIn PDF document text
- https://atlas-consulting.ro/fckeditor/fisiere/file/geluxofokef.pdfIn PDF document text
- https://cyberbirddog.com/userfiles/files/45591988308.pdfIn PDF document text
- https://lidiyageorgieva.com/ckfinder/userfiles/files/saminikudeni.pdfIn PDF document text
- http://pengyou-english.com/FileData/ckfinder/files/20210914_5EEE83E8B6BA00F1.pdfIn PDF document text
- http://ulsantour.com/FileData/ckfinder/files/20210901_8F6E4013A532A713.pdfIn PDF document text
- http://mastervin.ru/files/file/78038686041.pdfIn PDF document text
- https://helicopterleasingservices.com/userfiles/files/gifamokipanobixa.pdfIn PDF document text
- https://nenmongdangquang.com/upload/files/5792544134.pdfIn PDF document text
- http://boletos.luzservicos.com/ckfinder/userfiles/files/7694874474.pdfIn PDF document text
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361f63adb98---xejetitupofimikekov.pdfIn PDF document text
- https://www.studiorosaliabusco.it/ckfinder/userfiles/files/rimatuvavewuterel.pdfIn PDF document text
- http://arniestribu.com/campannas/file/29974175076.pdfIn PDF document text
- https://biroestarsa.hu/uploads/file/8136402708.pdfIn PDF document text
- https://luxesystem.site/js/ckfinder/userfiles/files/58242493646.pdfIn PDF document text
- http://rszm88.com/upfolder/e/files/20210913002050.pdfIn PDF document text
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/298396bcf503c8bc62b373527ec36b08/bemiteg.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_off0000e4e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4E4 | 11040 bytes |
SHA-256: 7282372115fcbd986b4f9d303f7c4d063ef3c8dccc4e38f369032093a937c7d1 |
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font_01_sfnt_off0000fe84.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE84 | 17568 bytes |
SHA-256: d13aac5265886c046dbace9a44c9844282bd0fe8f2f28a27373aa91021feaeed |
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font_02_sfnt_off00012c34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C34 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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