MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=nota+movie+tamil+download PDF link annotation
- http://johncarroll1967.com/clients/1/18/1896e795ecc2602204d707ec4e69586f/File/78492463000.pdfIn PDF document text
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfc1006610---nigiguxiwi.pdfIn PDF document text
- http://grandp.ru/userfiles/file/sufitijewonogalumamu.pdfIn PDF document text
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/2de187bd316403c98bc0afb200cf3e1b/29988121222.pdfIn PDF document text
- http://naturalmis.com/userfiles/file/93973573229.pdfIn PDF document text
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608379e5736d5---xisuratumej.pdfIn PDF document text
- https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/1f61ea1cecbe824165cd182af02e8bb4/junifamuvigigiwelam.pdfIn PDF document text
- https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/28458669188c3ca7561e98124f361bbc/nomexeraki.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/61099126631.pdfIn PDF document text
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16078c2428c512---jiviravisepubipi.pdfIn PDF document text
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/f43a64acd1cd94c4f2ef32da23fc1fa4/jasot.pdfIn PDF document text
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16093b20bbdc83---kanenekibalasivok.pdfIn PDF document text
- http://khyljg.com/uploadfiles/files/xiwef.pdfIn PDF document text
- https://flardochform.se/userfiles/file/526085187.pdfIn PDF document text
- https://btcauction.vn/hinhanh/file/laperovupineluviridopadul.pdfIn PDF document text
- http://dongkoo.com/uploads/editor/files/xumujedexarodewulatudu.pdfIn PDF document text
- http://rauvuonsach.net/images/uploads/files/48961503593.pdfIn PDF document text
- https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607070983382a---78624262850.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000104ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104CE | 4820 bytes |
SHA-256: 26b1286d923ac631ea9dbe4731f1f756f85a9a9d7309f97e0ea09766b7bda452 |
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font_01_sfnt_off00011538.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11538 | 10856 bytes |
SHA-256: 5d1262417d637bc42be0484413918dfb6373c2283c56ed438b22e3c0b5b1576a |
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