MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics indicate the PDF acts as a link farm, directing users to various external domains, many of which appear to be compromised or disposable hosting. The presence of embedded URLs and the overall structure suggest a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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=world+prophecy+news PDF link annotation
- http://phanvienphianam.com/uploads/userfiles/file/jebavusagu.pdfIn PDF document text
- http://turbotechnik24.de/userfiles/file/lasanapupijepigurotuki.pdfIn PDF document text
- http://ohmytour.kr/FileData/ckfinder/files/20210905_FBB54FA9F87DC572.pdfIn PDF document text
- http://kanalizace-ul.cz/userfiles/file/36340782261.pdfIn PDF document text
- https://hbphoto.ca/resimler/files/23996140035.pdfIn PDF document text
- http://prestizhstroycompany.ru/SITE/files/editor/file/81706207783.pdfIn PDF document text
- http://wksx.top/images/userfiles/file/75762903440.pdfIn PDF document text
- https://wanna-drive.nl/files/File/xobakagovelobo.pdfIn PDF document text
- https://ngusacdon.com/upload/files/jorevuzi.pdfIn PDF document text
- http://xn--o79av69abka850ab6c.com/upload/file/202109240753222054.pdfIn PDF document text
- http://infinity-c-t.com/userfiles/file/27037705865.pdfIn PDF document text
- http://op-gold.com/ck_image/files/lafigazigulibaliwug.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/153f65367e512ab38aa0387cf2740491/rabebusufufew.pdfIn PDF document text
- http://ntvietnga.com/upload/files/22741643216.pdfIn PDF document text
- https://vinadesigndanang.vn/uploads/image/files/tevufome.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/213deb0f83a061400307373b93108f36/botezemuvoxetiwebijuwo.pdfIn PDF document text
- http://rsti.biz/files/fck/file/folujiletogovana.pdfIn PDF document text
- http://tamtamphat.com/upload/files/zametunimeranivalu.pdfIn PDF document text
- https://butterfly-propertymanagement.com/userfiles/file/31108228083.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/23853983894.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/244fd9cba64d17f99de22eb8cdc538b0/nimivoleziteluwozo.pdfIn PDF document text
- http://dd-eng.com/files/files/51247652978.pdfIn PDF document text
- http://cukiernia.eu/upload/files/gidibuv.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/jaburojusejox.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_off0000d939.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD939 | 10452 bytes |
SHA-256: 500377bb07313eb17c1b9f99fd0d00da06d91a94309b42fa8d275b1347ca509b |
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font_01_sfnt_off0000f0eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0EB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000108fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108FD | 19972 bytes |
SHA-256: 061d5bced9b98420b15a018eb7064bb3a1c822e009fcc6e3fcb8626007d0c942 |
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