MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous external URLs, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating a tactic to obscure the true destination of the links. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://oniceh.ru/uplcv?utm_term=rebus+game+answers PDF link annotation
- http://retailjewellerindiaawards.com/userfiles/file/51500388689.pdfIn PDF document text
- http://novo-foto.ru/ckfinder/userfiles/files/38114705331.pdfIn PDF document text
- http://daiichitelecom.com/uploads/news_file/nibaxefufik.pdfIn PDF document text
- http://newtrichur.com/userfiles/file/24410627899.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/bojugojafabi.pdfIn PDF document text
- http://ohappy.org/userData/board/file/tufarusetojetezupex.pdfIn PDF document text
- https://bliznacite.com/files/53369478532.pdfIn PDF document text
- https://rimsball.com/ckfinder/userfiles/files/xugibimewitog.pdfIn PDF document text
- http://minhnguyenvn.com/uploads/userfiles/file/zipopititagesam.pdfIn PDF document text
- https://www.playitdirect.ca/ckfinder/uploadfiles/files/nulajuxedigutise.pdfIn PDF document text
- http://ijdssymposium.eu/upload/99324268710.pdfIn PDF document text
- http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/vinivupudidur.pdfIn PDF document text
- https://suksesunited.com/contents/files/zabonugaro.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdaa21448e---fedajewatogawawugof.pdfIn PDF document text
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/c8ll1pbl53o2lvt673fjthjbls/86246531132.pdfIn PDF document text
- http://www.sudaff.com/pics/file/50961965961.pdfIn PDF document text
- https://xn--80ag1a2a.xn--p1ai/files/file/dudekanunam.pdfIn PDF document text
- http://esangsok.com/upfile/files/96572723050.pdfIn PDF document text
- http://sxnqx.org/upload/file/Fl202109152236562440.pdfIn PDF document text
- https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/a20d9886527c77ad90b449c91780e517/savonepawuniwaramej.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_off0000d8e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8E8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f0fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0FA | 18060 bytes |
SHA-256: 62d1045a4807d542a43683d54ad10cbf0b59ecd1e9f5f6ffff6dc0cbf8c6984f |
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font_02_sfnt_off00011ed5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ED5 | 10464 bytes |
SHA-256: b755694da650e787430db3b5cf95767949662b1a0b5b93ab9197e48c1907a192 |
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