MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified the document as a link farm, with several links pointing to compromised CMS uploads and disposable hosting. The embedded URLs suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://cructi.ru/uplcv?utm_term=betty+azar+understanding+and+using+english+grammar+4th+edition+pdf PDF link annotation
- http://xpeedon.net/userfiles/file/20210902063350.pdfIn PDF document text
- https://priscar.com/documents/files/faxowodumapezafodo.pdfIn PDF document text
- http://3bbb.fr/ckeditor/upload/files/kepinojopok.pdfIn PDF document text
- http://shangyi-pump.com/uploads/file/131904497796.pdfIn PDF document text
- https://tidymoney.com/ckfinder/userfiles/files/padavinumusix.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/18475548025.pdfIn PDF document text
- http://archi-m.ru/userfiles/file/60764505290.pdfIn PDF document text
- http://m2m2design.com/userfiles/sovafemolijijasusozor.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161382bdbdf0b5---buzubixibitamo.pdfIn PDF document text
- https://infotechloyalty.com/bot/ckfinder/uf/files/zozofijaxome.pdfIn PDF document text
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/1fc9eb767f575488bc224cfbea2ccd0a/sogividipena.pdfIn PDF document text
- http://dobrasekacka.cz/userfiles/file/39774168528.pdfIn PDF document text
- https://www.ojchamber.com/ckfinder/userfiles/files/vomixa.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613019d4ce741---bibuvovodiza.pdfIn PDF document text
- http://sportingfoundation.com/uploads/file/31087109870.pdfIn PDF document text
- http://rencontres-icare.org/userfiles/file/69584672034.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/zedigizeleba.pdfIn PDF document text
- https://www.gpaci.org.br/cms/ckfinder/userfiles/files/45154482329.pdfIn PDF document text
- http://geerhannutpourreussir.be/docs/upload/files/podusulevunanuj.pdfIn PDF document text
- http://gnox.vn/upload/files/59049948011.pdfIn PDF document text
- http://bagodilovaspark.hu/userfiles/file/47347683853.pdfIn PDF document text
- http://csc0898.com/userfiles/file/20210906133117_w5gsf9.pdfIn PDF document text
- http://jsushibrea.com/uploads/files/93179659831.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_off0000e529.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE529 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fd3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD3B | 19620 bytes |
SHA-256: 1320de9e7383c3c8f5f2f0d8a7741da32b2ea6d074a00e64ed75fbf5e42f446d |
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font_02_sfnt_off00012fea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FEA | 11352 bytes |
SHA-256: 76ce35432c37974e81acfab57cc4db95d851286d7632658737ccf6ffc948fa68 |
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