MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a primary mechanism for executing malicious actions within the PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 https://allytemp.ru/uplcv?utm_term=adguard+premium+apk+latest+version+free+download
- http://ngocphuocjsc.com/public/default/ckeditor/files/28846156990.pdf
- http://suurelepa.ee/data/file/2834490315.pdf
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e5c4e47260057c7515c7b74e5e1abdba/14507018240.pdf
- http://lsneotek.com/ckupload/files/84340941698.pdf
- http://creaorganization.com/depo/sayfaresim/file/48492227635.pdf
- https://tidaksusah.com/contents/files/27301163407.pdf
- http://jaluzipro.ru/public/userfiles/file/96699872070.pdf
- https://gres-k.cat/userfiles/file/dafekanutumezuse.pdf
- https://autoroman-service.ro/imagini_ws/30399570689.pdf
- https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/23995049786.pdf
- http://larben.cz/media/images/upload/file/bejez.pdf
- http://www.ramseier-appenzell.ch/elrada/js/ckfinder/userfiles/files/71650723631.pdf
- http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/31507388076.pdf
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a18e4e91a---pizikorojajefezipujadidi.pdf
- https://hzautomatisering.nl/userfiles/file/59337768530.pdf
- https://interativacorretora.com/fotosempresa/files/gapezadozevox.pdf
- http://gmart-express.com/demo/uploadpic/file/16304035254.pdf
- https://ariconium.cz/webpagebuilder/ckfinder/userfiles/files/rofowugajivitemenosu.pdf
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef7ef3a584---64202277002.pdf
- http://velomagazin.hu/UserFiles/file/28560323868.pdf
- http://thai-apsproducts.com/file_media/file_image/file/lakuvomanatovifu.pdf
- http://cgpharma.in/cote_dor_import/admin/ckfinder/userfiles/files/filufowapox.pdf
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f03ca92b98---tovuvosibowozipe.pdf
- 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_off0000e9c0.bina614f11a9f656e28ef66cc625058486578a59b491da1e634857d9cee47de849d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9C0 | 11164 bytes |
font_01_sfnt_off000103b1.bin422f27562ee363fedfc03cd34e43740cc6b4ddf267feeb2a4818395f044c2df8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103B1 | 18992 bytes |
font_02_sfnt_off00013519.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13519 | 16792 bytes |
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