MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The presence of embedded JavaScript and multiple heuristics indicating a link farm on compromised or disposable hosting strongly suggests malicious intent. The ML classifier and ClamAV detection further confirm this, with the PDF likely serving as a lure to redirect users to malicious sites for phishing or malware delivery. The embedded JavaScript is likely responsible for initiating the redirection or payload download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://waxiangyuan.com/upload_fck/file/2021-9-7/20210907110814898685.pdf In PDF document text
- http://targhevaticane.it/userfiles/files/43682390506.pdfIn PDF document text
- http://rustproofingottawa.com/userfiles/file/62900414666.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613433797cadc---54579420970.pdfIn PDF document text
- https://onutglen.com/caningest/images/file/wofekuzodupawetivubobuwed.pdfIn PDF document text
- http://colleges-in-tamilnadu.com/FCKeditor/userfiles/file/jaratemusogezoji.pdfIn PDF document text
- http://erdbau-rauch.at/16302494391.pdfIn PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/df626afba745fdd18c2d92106518bb0f/xezolalezozuzo.pdfIn PDF document text
- http://corkpotters.com/images/sekarasudavuvekomeno.pdfIn PDF document text
- http://3gr-group-com.gbintl.com/ci/userfiles/files/22178494452.pdfIn PDF document text
- https://amatnieks.lv/pictures/image/98758926052.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d19b6865c3---mirejigupola.pdfIn PDF document text
- http://heathrowairporttaxi.website/userfiles/file/tetabudaruweg.pdfIn PDF document text
- http://breakevenpoint.pl/uploads/editor/file/30655860927.pdfIn PDF document text
- http://sinproval.it/userfiles/files/gidowesirupafegetoguwa.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16141756ab5501---48848631465.pdfIn PDF document text
- http://thuexedanang247.com/uploads/image/files/88265181600.pdfIn PDF document text
- http://rjbmachinery.com/d/files/5931707970.pdfIn PDF document text
- https://100tmt.com/uploadimage/files/20210904142215.pdfIn PDF document text
- http://shiinamotors.com/js/upload/files/wimagoguzugelitosu.pdfIn PDF document text
- http://www.dfdtrading.sk/ckfinder/userfiles/files/najewoxiguvenuwivumovafu.pdfIn PDF document text
- http://dakdekkersindex.nl/images/uploads/890550656.pdfIn PDF document text
- http://vinhosnorte.com/images/files/kononetadezonokuravu.pdfIn PDF document text
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613822139d316---91056135318.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=top+10+best+camera+apps+for+androidPDF 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_off0000dfa7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFA7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f7b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7B9 | 17640 bytes |
SHA-256: e14f7dc89c77c693136b28b5a40d83fd95353bf405b999ae20910d36e13c2768 |
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font_02_sfnt_off0001256f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1256F | 11012 bytes |
SHA-256: da1f0ef13c8f3ffb67a3a7c95889f1439e3dfb82f1925f5533c5f1934351372c |
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