MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Numerous heuristics point to the PDF acting as a link farm, directing users to various external websites, some hosted on compromised CMS platforms. The presence of multiple disposable and potentially compromised domains suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9969
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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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://infrive.ru/uplcv?utm_term=me+too+in+cantonese PDF link annotation
- https://xylemleads.com/userfiles/file/18211291993.pdfIn PDF document text
- https://towa-aaa.jp/userfiles/file/xinaposamejatajebewogat.pdfIn PDF document text
- https://siangyun.com/upfiles/editor/files/lexoguzesiba.pdfIn PDF document text
- https://umutisi.com/umut/upload/files/85879877985.pdfIn PDF document text
- http://elazentrale.de/images/uploaded/file/50153513977.pdfIn PDF document text
- https://briljant-maleri.se/UserFiles/files/vuzotawug.pdfIn PDF document text
- http://gamax-motor.cz/data/dokumenty/tizurivatuxuwupovuposo.pdfIn PDF document text
- http://gospelpour100voix.com/fichiers/newsletter/file/towozeb.pdfIn PDF document text
- http://elpijisystem.com/file/46577888224.pdfIn PDF document text
- http://szcftz.com/upload/zugobuta.pdfIn PDF document text
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161563b364ef5d---20656245406.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/888fc40000e754dec7737e0439f3db71/64286395252.pdfIn PDF document text
- http://www.benyowsky.com/resources/files/libekuruv.pdfIn PDF document text
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613d86152e3d8---69827420904.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/84223167640.pdfIn PDF document text
- http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/45749919824.pdfIn PDF document text
- http://sino-web.net/filespath/files/20210924012818.pdfIn PDF document text
- http://como.gattinonimondodivacanze.it/themes/userfiles/files/63583195607.pdfIn PDF document text
- http://koyomisushi.com/uploads/files/66414432382.pdfIn PDF document text
- http://aktifithalat.com/resimlerfiles/70262959392.pdfIn PDF document text
- https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/91984745998.pdfIn PDF document text
- https://ls-machinery.com/uploadpic/files/202109281532398247.pdfIn PDF document text
- http://bachtungcompany.com/upload/files/rewepitipofuzabu.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_off000100c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100C8 | 10068 bytes |
SHA-256: 513aec21cbc63a3620824ac489fa327f80882e4ca9f928ad7f931216decb3eb4 |
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font_01_sfnt_off0001175a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1175A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012f6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F6C | 24536 bytes |
SHA-256: 82d3dfc4771d4a8980f6215576788bfdc889a118736774fb113755cbd8c26a26 |
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