MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that form a link farm, directing users to various external websites. Several heuristics indicate these links are associated with compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://nomylo.ru/uplcv?utm_term=treatment+of+pyelonephritis+in+males PDF link annotation
- https://luatkhangthai.vn/upload/fck/file/ditonor.pdfIn PDF document text
- http://rc-saty.cz/gais/image/file/79063739172.pdfIn PDF document text
- http://restavratorstvo.com/ckfinder/userfiles/files/80385570479.pdfIn PDF document text
- http://infinity-pro.ru/userfiles/file/dogevodabi.pdfIn PDF document text
- https://sssmri.com/ckfinder/userfiles/files/gigaw.pdfIn PDF document text
- http://kjphotocon.org/data/userfiles/files/xedilamugevuwigel.pdfIn PDF document text
- https://oxi-dental.ro/imagini_ws/dusozelizidole.pdfIn PDF document text
- http://sonhanint.com/uploadpic/sun/files/202109100803439860.pdfIn PDF document text
- http://marine-inox.com/i/File/61985478877.pdfIn PDF document text
- http://abwsalisbury.com/uploads/files/44521569020.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b31438450e---6500428520.pdfIn PDF document text
- http://kibunajcc.com/ckfinder/userfiles/files/lomesefividawesuluf.pdfIn PDF document text
- http://turbotechnik24.de/userfiles/file/48960589176.pdfIn PDF document text
- http://chithanhplastics.com/uploads/userfiles/file/80955449132.pdfIn PDF document text
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16140906be903c---dugatibipamulopuno.pdfIn PDF document text
- https://beldaoyun.com/calisma2/files/uploads/23597720460.pdfIn PDF document text
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153e2111231a---gamatunokolekipodijul.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/zukigezurorekidusexa.pdfIn PDF document text
- http://highspiritsmusic.com/ckfinder/userfiles/files/gapovugapunu.pdfIn PDF document text
- http://bresky.cz/res/file/6213516220.pdfIn PDF document text
- http://centronegozi.com/public/1889146643.pdfIn PDF document text
- https://steklo-shik.ru/userfiles/file/74438218133.pdfIn PDF document text
- http://teknis.it/userfiles/files/70056609325.pdfIn PDF document text
- http://hoya-system.com/uploads/files/202109042250245695.pdfIn PDF document text
- http://tourister.kr/userfiles/file/96806390249.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_off0000c230.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC230 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000da42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA42 | 15916 bytes |
SHA-256: 70a404193e8224efd73122d9aed6a1723b6e696f001cbf05935eff3c8d80e993 |
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font_02_sfnt_off0001023d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1023D | 10700 bytes |
SHA-256: 259608f0c7f6d19e2e99495698c391e8284d5519b61cf68edcbfbae8a68f1a81 |
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