MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics strongly suggest this malicious intent. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a phishing lure or a distribution point for further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://synerhu.ru/uplcv?utm_term=ad+blocker+apk+premium PDF link annotation
- http://www.radio-kum.si/data/files/zirusoxu.pdfIn PDF document text
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16145463f402d7---98012895074.pdfIn PDF document text
- http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/19480785146.pdfIn PDF document text
- http://akiisushi.com/uploads/files/vivefebakuxazuvad.pdfIn PDF document text
- https://toyotaautobody.com/ckfinder/userfiles/files/95980184978.pdfIn PDF document text
- http://smingames.com/ckfinder/files/5849849231.pdfIn PDF document text
- http://agisma.ru/files/pages/files/77512496285.pdfIn PDF document text
- https://feng-shuiworld.com/userfiles/file/vapixib.pdfIn PDF document text
- http://hosungtour.com/FileData/ckfinder/files/20210913_B4EF42F02978683C.pdfIn PDF document text
- http://luckdidea.com/ckfinder/images_store/files/noximejebutelukopawew.pdfIn PDF document text
- http://plncse.hu/php_data/file/fupesonasijofazedofove.pdfIn PDF document text
- http://cserepakcio.hu/xdata/file/luwarixapuzepigibedu.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16144142364f56---pabazofenatiduxumevi.pdfIn PDF document text
- https://oxi-dental.ro/imagini_ws/84696099652.pdfIn PDF document text
- http://rts-3.ru/upload/files/34903623218.pdfIn PDF document text
- http://ginzaramen.us/uploads/files/36795170623.pdfIn PDF document text
- https://pagodatalk.com/_UploadFile/Images/file/61305815473.pdfIn PDF document text
- http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/161318368cd00d---93176348103.pdfIn PDF document text
- https://x-leather.com/radsportfiles/file/43308207438.pdfIn PDF document text
- https://soechi.net/userfiles/file/59933581727.pdfIn PDF document text
- http://foto-recepty.sk/images/fotky/88469822178.pdfIn PDF document text
- http://safiorida.dk/operatori/userfiles/file/subatuluxe.pdfIn PDF document text
- http://komodovo.ru/upload_picture/43730060405.pdfIn PDF document text
- http://agecarekorea.com/ckupload/files/serefutavumasiramowi.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_off0000b1dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1DD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c9ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9EF | 17144 bytes |
SHA-256: 0ebd9ffdc41eaf7fa4e497e9f628634f0374066c7050875caef0661bddf2f07e |
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font_02_sfnt_off0000f564.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF564 | 10620 bytes |
SHA-256: c05afcce58e2034557d45fa5fafe6132147e23448383baa3df322b6e3df42b76 |
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