MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with one specifically identified as an external URI pointing to 'synerhu.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host many links on disposable domains, a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection as a phishing trojan points towards an attack pattern involving redirection to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 5
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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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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=anatomy+perspective+and+composition+for+the+artist+pdf PDF link annotation
- http://www.awakohchang.com/image/upload/File/inideranusimuzagufed.pdfIn PDF document text
- https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/93607613114.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f903d9306b2e43af2fa6a7ad6903ff86/fijal.pdfIn PDF document text
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1614b5200c315e---51358254366.pdfIn PDF document text
- http://www.klimavill.com/data/editorfile/18969803048.pdfIn PDF document text
- http://www.novosib-sport.ru/ckfinder/userfiles/files/17908213794.pdfIn PDF document text
- http://only-svet.ru/upload/files/5415981383.pdfIn PDF document text
- http://aqua4you.hu/userfiles/file/pojizar.pdfIn PDF document text
- http://vkts.se/userfiles/file/femixenodasub.pdfIn PDF document text
- http://www.alexgis.com/siteuploads/editorimg/file/71506032903.pdfIn PDF document text
- http://zsdbiopharm.com/upload/files/49739849600.pdfIn PDF document text
- http://cyc.cz/pictures/clanky/files/samipubonidixen.pdfIn PDF document text
- https://protectname.xyz/whoisprivacy/userfiles/files/9250917040.pdfIn PDF document text
- https://divanich96.ru/admin/ckfinder/userfiles/files/loxaxejisi.pdfIn PDF document text
- http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/1646283719.pdfIn PDF document text
- http://4chan.ro/UserFiles/file/87419583030.pdfIn PDF document text
- http://chukguwang.com/files/fckeditor/file/6217644243.pdfIn PDF document text
- http://utcsp.rustyramone.com/uploads/files/87602190703.pdfIn PDF document text
- http://salman-is.com/userfiles/file/68706355973.pdfIn PDF document text
- https://hopadive.cz/ckfinder/userfiles/files/86706524585.pdfIn PDF document text
- https://rumahbaruku.com/contents/files/83670295319.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_off0000b5c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5C9 | 16928 bytes |
SHA-256: 0bb49eb2e89c06869f8154e57a0b30fbbdc2d3732671acfb8db3b51e44f65804 |
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font_01_sfnt_off0000e187.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE187 | 11000 bytes |
SHA-256: c47756a9437701aea99ad0a12e93f23e6da0863a1240239c7fdc6b2d8c6cf70c |
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font_02_sfnt_off0000fafd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAFD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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