MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ClamAV and an ML classifier. The heuristics indicate it functions as a link farm, directing users to various PDF files hosted on potentially compromised or disposable domains. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document's intent is to trick the user into installing malicious software by posing as a necessary browser update or extension. Although no scripts were directly extracted, the nature of the links and the lure heuristic point towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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=android+beta+download
- https://printjet.pl/pliki_user/File/supumufogubagu.pdf
- https://pirkitpadangas.lt/ckfinder/userfiles/files/zutuso.pdf
- http://lexuspolymers.com/assets/ckfinder/userfiles/files/47845971404.pdf
- http://betheaskssd.com/flash/betheaskssd.com/file/bigesojifowozumonawifelu.pdf
- http://cu-mbc.com/ckfinder/userfiles/files/volap.pdf
- https://xn--hjrnskadeakademien-mtb.se/userfiles/file/mepufedega.pdf
- https://christianklein.eu/Quansis/ckfinder/userfiles/files/47181486901.pdf
- http://reylab.com/userfiles/file/giritidoduzokogidus.pdf
- http://mbjarrahi.com/UploadedFiles/New/file/69399307394.pdf
- http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75056600114.pdf
- https://pfollowers.com/ci/userfiles/files/75106106111.pdf
- http://belloverde.net/emailer/file/65520666474.pdf
- https://clicksnepal.grnca.org/img/files/files/1814170981.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161344b2e8921b---33834027153.pdf
- http://izumrud38.com/ckfinder/userfiles/files/vebonabuxagaravikalazi.pdf
- http://ggbris.com/slbdavbatala/userfiles/file/lavizuwiwesuk.pdf
- http://e-baze.lv/images/site/file/sokefuzosopixum.pdf
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16141affcd6d6d---70433072634.pdf
- http://master-vin.ru/files/file/7484404231.pdf
- https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/90601493913.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161435beb52c96---voxowupufedazine.pdf
- http://yuha.be/_files/file/79957279056.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_off0000ccef.bin7a3ec4c7265412250492a3231df8a165d245793a31a92462e6e6a2f45ef7d4cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCEF | 16640 bytes |
font_01_sfnt_off0000f802.bin2448de2f5e2e8fba603f941c33d59dbc733d4152105cf422fc6d31f7c4a62ec6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF802 | 10280 bytes |
font_02_sfnt_off00010f4e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F4E | 16792 bytes |
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