MALICIOUS
172
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 compromised or disposable hosting, forming a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of urgency lures and download buttons suggests a phishing or social engineering attempt to trick the user into clicking these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
Heuristics 8
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://winterwonderlandzundert.nl/uploadimages/files/82770056144.pdf
- http://westpakusa.com/phpsites/vertical_living/uploads/file/37120369540.pdf
- http://slsnn.ru/content/file/84547863292.pdf
- https://bfull.ru/uploads/files/48585898227.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1ee441c8f---73222096421.pdf
- https://patriciobanados.cl/upload/file/
- http://www.findvoters.com/userfiles/file/66228796983.pdf
- https://badrivishal.com/media/dulefawiseje.pdf
- https://98ing.com/upload/ck/files/20210908_221031.pdf
- http://www.mariabeckmann.com/fotos/uploads/files/raber.pdf
- http://terremeraude.com/userfiles/file/fezujamofejiwatoxeteboz.pdf
- https://fivetc.vn/uploads/files/18748243901.pdf
- http://lisaarkin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/84101508133.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/5e816a401261bd4c375d07765f058679/sodefuvore.pdf
- https://lapalettedesarts.fr/gestion/file/84898824064.pdf
- http://jiin-torng.com/uploadfiles/20210907091012.pdf
- http://sineadstone.com/userfiles/file/rosazifurefilexedanadobug.pdf
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/ec687332eb5a828a6bf3543f307fe9ef/679422154.pdf
- http://preiss.at/upload_files/files/4089002955.pdf
- https://lekkermooi.nl/userfiles/file/nuvibon.pdf
- http://safaraval.com/basefile/safaravalcom/files/lupenisofebesup.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613230a3c5362---15632772772.pdf
- http://airfa.it/userfiles/file/93896017507.pdf
- http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/89027367455.pdf
- http://makinsushi.com/uploads/files/rokeloluni.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138923201571---zonebe.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=instagram+followers+and+unfollowers+apk
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d93c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD93C | 16792 bytes |
font_01_sfnt_off0000f14e.bin5ef2e3303479696d223a939b79da1121474f38ef33dc5b06c157edc9d227853a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF14E | 18612 bytes |
font_02_sfnt_off000121ed.bin8f45aa859f877bb8c44e7dbf701854099a68831f2389ab4ed562bf619bdc03d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121ED | 10976 bytes |
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