MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate this is a link farm designed to direct users to external content, and ClamAV detection confirms it as a phishing/trojan PDF. The ML classifier also strongly flagged this file as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://smidgel.ru/uplcv?utm_term=post+polio+syndrome+definition PDF link annotation
- http://tavio.su/files/file/jajobijawolapumemi.pdfIn PDF document text
- https://hinaweb.com/upload/file/17587699173.pdfIn PDF document text
- http://xn--2e0b30g3uq7pay7m.com/upload/fckeditor/file/47530388317.pdfIn PDF document text
- http://evolution-dev.com/file_media/file_image/file/zefupasoluzuraluxamexixeb.pdfIn PDF document text
- https://vinadesigndanang.vn/uploads/image/files/sedotovutuzefijaw.pdfIn PDF document text
- http://ssatripoli.org/userfiles/file/nuzerukadi.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/hsc4hrgq9gro7hvg52qur7151q/lurufo.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161416370c6485---18491317354.pdfIn PDF document text
- https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/30597954162.pdfIn PDF document text
- http://donateagift.eu/userfiles/file/mudovagizanijubetif.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16141343f05bc5---36064944648.pdfIn PDF document text
- https://cs-nippon-cp.com/mailmagazine/upload/files/75729014676.pdfIn PDF document text
- https://jiu-hang.com/upfiles/editor/files/difikeferu.pdfIn PDF document text
- http://gespk.com/userfiles/file/gawenimibewelelewexe.pdfIn PDF document text
- https://xpress2.eu/ckfinder/userfiles/files/furuzowufepesemoka.pdfIn PDF document text
- http://cegled.varosom.hu/userfiles/files/71200664937.pdfIn PDF document text
- http://hotdeals24x7.com/ci/userfiles/files/moxovijux.pdfIn PDF document text
- http://quesnelbusinessnetwork.ca/userfiles/file/navazetadomikuxufuviwofa.pdfIn PDF document text
- http://asiadomainstore.com/userfiles/file/javerasejiwixelumovonorol.pdfIn PDF document text
- https://cet.sk/res/file/witabi.pdfIn PDF document text
- https://dla-pracownika.pl/pliki_user/File/zivuralozoxebukewip.pdfIn PDF document text
- https://protradingindia.net/userfiles/file/bekesabexowemifolo.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_off0000f00f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF00F | 18284 bytes |
SHA-256: ed812d5dde15872e860687c536f04bbcf710b25791b6be4fc5dc1a7d9f1ce8e6 |
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font_01_sfnt_off00011e7f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E7F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013696.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13696 | 10612 bytes |
SHA-256: f231f24944c1a1ef50acfae732d599468f3d99e2b42292e24eae650704b10cbd |
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