MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates the document is a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://archism.ru/uplcv?utm_term=overclock+app+for+android PDF link annotation
- http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/86623837014.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/56328124816.pdfIn PDF document text
- https://towa-aaa.jp/userfiles/file/towevenazonaz.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614031e0737e6---xofurulujot.pdfIn PDF document text
- https://standsimulator.com/ckfinder/userfiles/files/63389546995.pdfIn PDF document text
- http://songhandiban.com/uploadfile/file/2021090610132673499.pdfIn PDF document text
- https://geneolock.com/locktactyuma/userfiles/file/rabivozijigugoxozari.pdfIn PDF document text
- https://shatalarab-llc.net/userfiles/files/56083310427.pdfIn PDF document text
- http://iwilldoit.ru/uploads/files/files/58075337495.pdfIn PDF document text
- https://rmp-familienanzeigen.de/cms/files/jusubulexesamuse.pdfIn PDF document text
- https://www.hotel-restaurant-plainfaing.fr/ckfinder/userfiles/files/93511457042.pdfIn PDF document text
- http://maturitni-ples.eu/UserFiles/File/kigir.pdfIn PDF document text
- https://buyafranchise.org/files/files/vuvami.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161412df9c6e33---zafuxoxilatugepuvasud.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/3d5f324a2ba71ba6525b06e7382adbff/ruzamos.pdfIn PDF document text
- http://stadion-zarya.ru/ckfinder/userfiles/files/mipimiv.pdfIn PDF document text
- https://relaxbotanika.cz/ckfinder/userfiles/files/65568127952.pdfIn PDF document text
- https://valkexclusief.reviewz.eu/app/webroot/files/userfiles/files/63645971405.pdfIn PDF document text
- https://nutstudio.it/userfiles/file/8535028144.pdfIn PDF document text
- http://careerpathrecruitment.com/swapscan/app/webroot/js/ckfinder/userfiles/files/75865794461.pdfIn PDF document text
- http://podolsk-kondicionery.ru/upload_picture/file/28264102959.pdfIn PDF document text
- http://toyteepee.com/uploadfiles/file/21090113520646062082je89.pdfIn PDF document text
- http://gasasosong.com/upload/fckeditor/file/76434434678.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_off0000e972.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE972 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010184.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10184 | 18056 bytes |
SHA-256: c3ec252a2545fc79e2250f45c59ad5aa02c1eba49c0a42f7a860ac160d7bcbf2 |
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font_02_sfnt_off0001306d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1306D | 10532 bytes |
SHA-256: 974fb7af7ed9f5b39315e444326c11894fb30a459ff041823b0d645cc6eaa44d |
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