MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to what appears to be compromised WordPress upload directories, suggesting it functions as a link farm to distribute further malicious content or phish users. The presence of external URIs and link farm heuristics strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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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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://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405a6aae414---kenuva.pdf In PDF document text
- http://www.americaninvest.net/upls/files/28239087972.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/4ca30097f0016e67b987703134c26df9/82534346411.pdfIn PDF document text
- https://lionkingbali.com/uploads/file/34561312616.pdfIn PDF document text
- http://vividconcept.in/userfiles/file/23677848871.pdfIn PDF document text
- http://qunjl.com/userfiles/files/zasovafukidudokugos.pdfIn PDF document text
- http://dichvutheapec.com/upload/FCK/file/mujijorajulosupifew.pdfIn PDF document text
- http://geologocarmignani.com/userfiles/files/gasimeva.pdfIn PDF document text
- http://mynotary.ca/sites/all/sites/mynotary.ca/files/pedawidosikifijejakol.pdfIn PDF document text
- https://xo-sound.ru/userfiles/file/jenixobaxobinovu.pdfIn PDF document text
- http://saigonford3s.com/uploads/2021-09-25/images/files/zumowutuxup.pdfIn PDF document text
- http://clinivetmadonnadirosa.eu/userfiles/files/258022199.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d88e4203cf---38600185995.pdfIn PDF document text
- https://lexconsulting.ro/webroot/files/media/tikevusapas.pdfIn PDF document text
- http://realestatespoznan.com/uploads/14219773625.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161460e8a0ba3d---duwefufiresidutabo.pdfIn PDF document text
- http://preiswerte-unterkunft-papenburg.de/mediapool/6564540973.pdfIn PDF document text
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/d134hit5uneucrrak7f0h19mpo/guruwonenab.pdfIn PDF document text
- http://densayhongngoai.com/uploads/userfiles/file/26170177472.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613363c4b7e08---65541914595.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=mods+for+indonesia+bus+simulatorPDF 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_off0000b20d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB20D | 10748 bytes |
SHA-256: 84c1393bc59c294aafd9509c968725f744242b0050b92f96976d26322c9f6b39 |
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font_01_sfnt_off0000cab7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAB7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e2c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2C9 | 18744 bytes |
SHA-256: 4aa4f9f0f1fff3eca82886a31fd7b57245d334aa19faea41256830e5a53e18ca |
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