MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to numerous external URLs, one of which is associated with an adblocker lure. The primary attack pattern involves social engineering to trick users into installing a browser extension or update, a common method for credential theft or malware installation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://cructi.ru/uplcv?utm_term=adblock+chrome+free+windows+10 PDF link annotation
- https://mobilaide.com/upload/editor/file/56910021529.pdfIn PDF document text
- https://qualityroofinnandsuites.com/nbloom/fckuploads/file/69883226208.pdfIn PDF document text
- http://appartementslisa.it/an3_Uploads/file/13318557613.pdfIn PDF document text
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613582aac3223---34707626591.pdfIn PDF document text
- https://ht-cooling-j3t.com/contents/files/50976010041.pdfIn PDF document text
- http://daugiavanthienphuoc.com/media/ftp/file/98778126770.pdfIn PDF document text
- https://www.naabelectric.com/userfiles/files/54860165688.pdfIn PDF document text
- http://pronobile.de/catalog/file/jamanexajetal.pdfIn PDF document text
- https://ewdel.cz/ckfinder/userfiles/files/39500256017.pdfIn PDF document text
- https://tybistanbul.org/resimler/files/vugul.pdfIn PDF document text
- http://tecksco.com/upload/files/2990955741.pdfIn PDF document text
- http://elskup.pl/images/assets/file/mojuwuforikuku.pdfIn PDF document text
- https://www.seblocation.com/ckfinder/userfiles/files/mofebibuzofaxunebu.pdfIn PDF document text
- https://marathonlaval.com/userfiles/files/75319972730.pdfIn PDF document text
- https://mastirz.com/userfiles/files/24457176862.pdfIn PDF document text
- http://graphicyazd.com/ckfinder/userfiles/files/32992377161.pdfIn PDF document text
- http://casavacanzesanvito.eu/userfiles/files/rifosupuvi.pdfIn PDF document text
- http://costruzionibulagna.it/userfiles/files/97664575357.pdfIn PDF document text
- http://cgl.lu/userfiles/files/lilidom.pdfIn PDF document text
- http://aydinservis.com/ckfinder/userfiles/files/wetaguvorufuposokovedu.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138e2953cab4---wikufo.pdfIn PDF document text
- http://thepnguyentran.com/media/ftp/file/ditobobu.pdfIn PDF document text
- https://telenovella-bg.com/files/pisafafirumu.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_off0000d5cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5CF | 10956 bytes |
SHA-256: e870cafb699054ef1bd1ae899357db99ea57a69f973642a06241a8d713abbaaf |
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font_01_sfnt_off0000ef12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF12 | 17256 bytes |
SHA-256: 5be4469e26c1e8a373da6d465a707fc31cbe925aba48b0d8bb559a6309495034 |
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font_02_sfnt_off00011b6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B6D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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