MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, containing numerous embedded URLs pointing to compromised websites, likely to lure users into visiting malicious content or downloading further payloads. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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://pistant.ru/uplcv?utm_term=gcse+transport+in+plants+worksheet PDF link annotation
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609264855afe6---29763496247.pdfIn PDF document text
- https://ceramicasvillaflor.cl/UserFiles/File/vowodikebe.pdfIn PDF document text
- http://pettwayfamilyreunion.com/clients/39389/File/xuposutusepiraboz.pdfIn PDF document text
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/ac2583iomg03mc2qi38t5ncgv7/sowib.pdfIn PDF document text
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a696f88015c069f2ed1824a9ed766efe/zekezifu.pdfIn PDF document text
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/d45951bfc92c23b826215b80c21609aa/lemesozozawot.pdfIn PDF document text
- http://phanphoiongnhuahoasen.vn/upload/files/gelidizabifutaxob.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160da9677a96f6---65081663179.pdfIn PDF document text
- https://procogs.com/FCKeditor/file/88932482087.pdfIn PDF document text
- https://www.albriug.com/static/editor/ckeditor/ckfinder/upfile/files/44435330630.pdfIn PDF document text
- http://clinicaveterinariasangiacomo.it/userfiles/files/23339694987.pdfIn PDF document text
- http://recit-de-vie.fr/userfiles/file/gosojenopiru.pdfIn PDF document text
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/sibuj.pdfIn PDF document text
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16105a4fe1868e---wijukifixitimurem.pdfIn PDF document text
- https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a781a979489---51279482243.pdfIn PDF document text
- http://geosond.pl/userfiles/file/33974868733.pdfIn PDF document text
- http://thesecurityguardunion.ca/userfiles/files/talozigakexofusif.pdfIn PDF document text
- https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/10i5bl3s1v2fhvbla877p21853/sekorewebojidujesunus.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_off00015a01.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15A01 | 10688 bytes |
SHA-256: 4c9db4c6b82813ba8a7d00b36e0c573ec57cd57635e2546f3b9aae1a89293509 |
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font_01_sfnt_off00017286.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17286 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00018a98.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18A98 | 19176 bytes |
SHA-256: 338f44efa92c9fe99eef17a4ef931471d00426f8c7859f6addfd621970e27493 |
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