MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one that appears to be a redirector, suggesting it's part of a link farm designed to lead users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a tactic to distribute malicious content or phishing lures through numerous low-reputation domains. No scripts were extracted, but the presence of external links and the link farm heuristic strongly suggest a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=ufo+vpn+master PDF link annotation
- http://learningkey.org/userfiles/54998754050.pdfIn PDF document text
- http://saothienemb.com/uploads/images/files/bologitezebusirerojunowu.pdfIn PDF document text
- http://snsi.jp/image/news_file/80436410590.pdfIn PDF document text
- https://milosislandrooms.gr/userfiles/file/82805816729.pdfIn PDF document text
- http://viswinkelindex.nl/images/uploads/kizuzuvarejep.pdfIn PDF document text
- http://tinhdauvietnam.vn/upload/files/3135808522.pdfIn PDF document text
- https://taptigrihnirman.com/singhania/downloads/file/7756269168.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd82f5594c---jijifofudirutepifupef.pdfIn PDF document text
- http://tai-group.com/upload/files/tobojeligoxaj.pdfIn PDF document text
- http://www.deewanalarab.com/up_imgs/75993468489.pdfIn PDF document text
- http://maasmartcity.com/userfiles/file/zazevagepuzi.pdfIn PDF document text
- https://uleshuzatabc.hu/files/file/nalawisiva.pdfIn PDF document text
- https://alkalacarservice.com/public_html/userfiles/file/40634899192.pdfIn PDF document text
- https://mamo-tato.ro/userfiles/file/geruramolugelibazuroruxiw.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16130c2d110347---22015092898.pdfIn PDF document text
- http://szyqjsj.com/UploadFile/file/20210908211136111.pdfIn PDF document text
- https://sieuthimaycafe.vn/uploads/file/8710773901.pdfIn PDF document text
- http://dtyxbpzx.com/filespath/files/20210903131107.pdfIn PDF document text
- http://sb-78.ru/files/file/tosipogakominifazunovo.pdfIn PDF document text
- http://tiquital.com/documentos/file/vikekabisadep.pdfIn PDF document text
- https://www.hinkler.com.au/application/third_party/ckfinder/userfiles/files/97042592852.pdfIn PDF document text
- https://fratellifurloni.it/file/kenizun.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_off0000c920.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC920 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e132.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE132 | 19432 bytes |
SHA-256: 40336d07146608c4032fd5dd4a9a759a7e5e4e79667542dd90ddbb9ef5b3ded3 |
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font_02_sfnt_off0001139a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1139A | 10456 bytes |
SHA-256: 061e316865fe2f9c37a5fb4dd04e8df214fef54453e2173555d3d8e930bb9a0b |
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