MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external websites, some hosted on compromised WordPress instances. The embedded URLs suggest a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://krisoc.ru/uplcv?utm_term=gottfried+bammes+anatomy+pdf PDF link annotation
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/eef6ff23c1c5626dfe206a0c0449bc47/78541963083.pdfIn PDF document text
- https://newsru.md/upload/userfiles/files/28342271273.pdfIn PDF document text
- https://kitchensofdiablo.com/upload/file/5732572116.pdfIn PDF document text
- https://taxfirma.com/userfiles/file/53605021242.pdfIn PDF document text
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/4c6bca1b07f65698fe0655d35bb89ea6/ronaluregopasiboto.pdfIn PDF document text
- http://mnwebdesign.dk/userfiles/file/getosisixebamemove.pdfIn PDF document text
- http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138fd74653ba---5877027609.pdfIn PDF document text
- https://ciar.vn/uploads/image/files/3228346840.pdfIn PDF document text
- http://www.masozilina.sk/ckfinder/userfiles/files/22837802166.pdfIn PDF document text
- http://unityproductions.com/upload/files/buxokuje.pdfIn PDF document text
- http://leinerpakgelatine.com/survey/userfiles/files/75396749573.pdfIn PDF document text
- https://brianspradlin.com/userfiles/file/43849004562.pdfIn PDF document text
- https://gulceoyunlar.com/calisma2/files/uploads/litakine.pdfIn PDF document text
- http://imhyuk.com/imhyukeditor/userfile/file/11409230986.pdfIn PDF document text
- https://cowik.pl/upload/fegunarakupelalafikevajad.pdfIn PDF document text
- http://umffz21.ru/admin/ckfinder/userfiles/files/mirepenusoburovugatoka.pdfIn PDF document text
- https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/75531494035.pdfIn PDF document text
- https://indoshaolinkungfusociety.com/ckfinder/userfiles/files/17173938239.pdfIn PDF document text
- https://sabunwangi.com/contents/files/zeforopogirudokove.pdfIn PDF document text
- http://jaluzipro.ru/public/userfiles/file/46315653375.pdfIn PDF document text
- http://combatkuntao.com/ckeditor/ckfinder/userfiles/files/25134551083.pdfIn PDF document text
- http://kehlux.lu/userfiles/files/11877429728.pdfIn PDF document text
- http://jeanchapleau.com/userfiles/file/noragitoranevepexad.pdfIn PDF document text
- https://www.vpn-solutions.com.pe/ckfinder/userfiles/files/zasunanesunusozome.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_off0000b3c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3C4 | 10904 bytes |
SHA-256: cf8f90472abdec84bacd52dcc00ef2b18a61c32b5581c4e51372cdeb06ae6537 |
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font_01_sfnt_off0000ccdc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCDC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e4ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4EE | 16548 bytes |
SHA-256: 1e871005af3f4a09a4788e23287e577df7594fdd1875a74d3d3740788fd7d8f1 |
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