MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to external sites, including one hosted on a compromised WordPress upload directory. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious or compromised sites. The presence of a link farm and the nature of the URLs suggest a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://fcgo.tw/uploadpic/files/sudesinuguge.pdf In PDF document text
- http://www.farnostbobrova.cz/ckfinder/files/xupaxowopezu.pdfIn PDF document text
- https://www.piramideidiomas.com/ckfinder/userfiles/files/83312755258.pdfIn PDF document text
- http://form4concrete.ru/pics/cont/file/27403929424.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/e95c12e938179df8ebb5859e90b9909a/43184310783.pdfIn PDF document text
- http://bentleyplemtech.ru/userfiles/file/xububidolupoxilijovu.pdfIn PDF document text
- https://pasationtravellers.com/root/FCKeditor/file/fojevesepuxul.pdfIn PDF document text
- http://onnetsolution.in/userfiles/file/doginutap.pdfIn PDF document text
- http://xiangzhuan.tw/upload/files/34346164261.pdfIn PDF document text
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336e89d555f---wopawexasivefe.pdfIn PDF document text
- https://repairbase.net/FCKeditor/editor/filemanager/connectors/php/images/file/jofetelorokobavejabavawal.pdfIn PDF document text
- http://sys-svinding.dk/userfiles/file/61190101241.pdfIn PDF document text
- https://nycsmindia.org/ckfinder/userfiles/files/pobujirunajudejiwifi.pdfIn PDF document text
- https://molecult.metallo-tests.ch/sites/web/upload/files/foseges.pdfIn PDF document text
- http://rafaelstore.ru/upload/files/videsoseturalitip.pdfIn PDF document text
- https://clinicaalcantara.es/sites/default/files/userfiles/file/25615552932.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161366c4ddfd24---47160943887.pdfIn PDF document text
- https://aporpeter.ro/userfiles/file/35867022910.pdfIn PDF document text
- http://thietbibepnhahang.net/media/files/29983735396.pdfIn PDF document text
- https://sabresources.com/FCKuploads/file/bilibufowusejaxovelugodo.pdfIn PDF document text
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/3f0e6d508c5c9b1f739604352cf9c351/72364602468.pdfIn PDF document text
- https://marwaautorepair.com/nbloom/fckuploads/file/39192947068.pdfIn PDF document text
- http://urduhadith.org/survey/userfiles/files/64086217722.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+place+obb+filePDF 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_off0000b52e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB52E | 16384 bytes |
SHA-256: 5d55044015c2e5a9137a85ddeb722006eaffb9c3813852f73f26d01ddd3b5cd4 |
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font_01_sfnt_off0000df42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF42 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f759.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF759 | 10320 bytes |
SHA-256: d18625c0bb49d83e5a0cf320fd64104b1b1eeb06192fff939859fc59489fd8f2 |
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