MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the presence of a 'callback phishing phone lure' heuristic and the nature of the links suggest an attempt to direct users to potentially malicious sites or services.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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 http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160fe8f2952149---forirutokofuzebirev.pdf In PDF document text
- http://ventss.ru/userfiles/files/27974087551.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a753563f04b---4626078135.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608785e1da88f---xonutididopigeregijitiw.pdfIn PDF document text
- http://broadviewlibrary.org/uploaded_bvlib/file/95227314784.pdfIn PDF document text
- http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/161208f8c8a7c6---pigunavala.pdfIn PDF document text
- https://tortugafilms.ca/adminfiles/file/nugometov.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/796l9dut722alebj0gntkqk8mr/42517939248.pdfIn PDF document text
- http://fujavietnam.com/images/Download/karagixujepo.pdfIn PDF document text
- http://dralituncer.com/userfiles/file/42467103117.pdfIn PDF document text
- https://www.pollackmihalyiskola.hu/ckfinder/userfiles/files/sarawutigobererepixok.pdfIn PDF document text
- http://funagamex.vn/PhuongNamGroup/userfiles/files/lutinotatidudunijut.pdfIn PDF document text
- http://thestarbusan.net/FileData/ckfinder/files/20210816_3578F44CBE1934B5.pdfIn PDF document text
- https://cantarefides.ro/admin/userfiles/file/58647646678.pdfIn PDF document text
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac87f72b76---jibevinimuligexutagaje.pdfIn PDF document text
- http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/sekogaluvebunaguzidudun.pdfIn PDF document text
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4131c47a2---xadodutumemopek.pdfIn PDF document text
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/pubifukasudogukazez.pdfIn PDF document text
- http://biswasi.com/userfiles/files/79248737722.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/bt7vpnugbsu9372erdj7o35jtf/rawunoximivogijibo.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5db885f6ca---87006036238.pdfIn PDF document text
- http://relatives-united.com/clients/75139/File/20168400738.pdfIn PDF document text
- http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/mawugom.pdfIn PDF document text
- http://fra2ange.it/userfiles/files/wetij.pdfIn PDF document text
- https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/4a881e0dc5c178276564f85f6e155a54/15874257322.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/84ff2da70a36aa6a26c56dc161629233/84078613798.pdfIn PDF document text
- http://biolabsrl.org/userfiles/files/rexifesirepubinudetosep.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=online+movie+ticket+booking+system+project+in+html+pdfPDF 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_off0000df63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF63 | 11472 bytes |
SHA-256: 18b7bbab9910446543427690ca386c61d9774306b351aaebc7e441ee0140ce2b |
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font_01_sfnt_off0000f9dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9DC | 16764 bytes |
SHA-256: 10269608249e825686e814aa8f58980d64f86232f63fa514e4b323f6bc14d8c9 |
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font_02_sfnt_off0001253a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1253A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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