MALICIOUS
156
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. It functions as a link farm, directing users to multiple external URLs hosted on potentially compromised or disposable domains. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics confirms its role in redirecting users, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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://coretry.ru/uplcv?utm_term=gc+overhead+limit+exceeded+r PDF link annotation
- http://trungnguyenjsc.vn/uploads/image/files/nexanovifedunu.pdfIn PDF document text
- https://skatrip.com/basefile/skatripcom/files/dudonobazutolenaxatoke.pdfIn PDF document text
- https://zenit-npk.ru/files/file/6866147866.pdfIn PDF document text
- https://interconformity.ro/images/file/gejevifodejusut.pdfIn PDF document text
- http://phongthuyphatloc.com/luutru/files/gizefi.pdfIn PDF document text
- https://vocembalo.ch/userfiles/file/49048674970.pdfIn PDF document text
- https://nutstudio.it/userfiles/file/biziliwofatavewus.pdfIn PDF document text
- https://agri-mal.pl/userfiles/file/63962858311.pdfIn PDF document text
- http://www.travelwithtaangoo.com/img/file/80578714358.pdfIn PDF document text
- http://jrecchina.com/ckeditor/ckfinder/userfiles/files/vesokosaxa.pdfIn PDF document text
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613647dc2a931---nalesazugekatetixatafaved.pdfIn PDF document text
- http://lionsmarsala.it/userfiles/files/pozimuda.pdfIn PDF document text
- http://dintek.eu/uploads/file/tijefuxolenusedipezoxusu.pdfIn PDF document text
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd5a5ec48a---6969113230.pdfIn PDF document text
- https://csam-villepinte.org/uploads/images/file/sovoputepaxu.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/so0771a4vnvim8t2028navt2vd/82430789224.pdfIn PDF document text
- http://banghetretruc.com/media/ftp/file/24335105710.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021091108242754.pdfIn PDF document text
- https://divinenine.net/userfiles/file/79573551048.pdfIn PDF document text
- http://elitk.ru/_files/kutanabewesizopubi.pdfIn PDF document text
- http://nuovojob.com/userfiles/files/26248034565.pdfIn PDF document text
- http://gonvvama.net/filespath/files/20210909185934.pdfIn PDF document text
- http://c-amc.com/upload/files/jiwuwegesuporaduti.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b335.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB335 | 19344 bytes |
SHA-256: e31ee175cb8a790a82af9b3a333a72bd07714a4c39da67af892bafa36c6ddc68 |
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font_01_sfnt_off0000e55f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE55F | 16240 bytes |
SHA-256: 0b6c9c11f2b3b13cd4809ff90fe0d2d30d2abc74b5cdce439b945a78d93825d3 |
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font_02_sfnt_off0000fb5e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB5E | 10572 bytes |
SHA-256: dbbbe661035edb75e87dd5d1d1fd876c186853964758fb43599b411fb5c8c5bb |
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font_03_sfnt_off00011382.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11382 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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