MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristic analysis revealed it functions as a link farm, directing users to multiple external URLs, some hosted on compromised WordPress sites. The presence of numerous links, including one with a 'utm_term' parameter suggesting tracking, points towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://queure.ru/uplcv?utm_term=autostart+android+10 PDF link annotation
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1614257ed2e111---venaler.pdfIn PDF document text
- https://bda.ch/ckfinder/userfiles/files/nizopalibovogimuwupalil.pdfIn PDF document text
- http://canadianartistic.com/userfiles/file/rozoparavefolisigasimapir.pdfIn PDF document text
- http://hotelpenza58.ru/ckfinder/userfiles/files/77474855942.pdfIn PDF document text
- https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/narobufinexawivubutimuve.pdfIn PDF document text
- https://dom4m.by/userfiles/files/bozilivenafir.pdfIn PDF document text
- http://ninda.vn/userfiles/files/28121032028.pdfIn PDF document text
- http://brkvinc.com/userfiles/file/xuxixajejeredugasapuji.pdfIn PDF document text
- https://protrialse.eu/files/files/beximi.pdfIn PDF document text
- http://rpsbchamber.org/editorData/file/69472052321.pdfIn PDF document text
- http://shrlie.com/upload_fck/file/2021-9-9/20210909152539857575.pdfIn PDF document text
- http://jinruily.com/UploadFile/file/20210905205043879.pdfIn PDF document text
- https://www.jaegeraviation.com/ckfinder/userfiles/files/93335450052.pdfIn PDF document text
- http://studiodispirito.it/userfiles/file/rulalefabofejapejibapux.pdfIn PDF document text
- https://apotekatia.ba/fajlovi/ninezupekul.pdfIn PDF document text
- http://citysoupsbellevue.com/uploads/files/34472512966.pdfIn PDF document text
- https://tagoproperties.com/ckfinder/userfiles/files/47358918268.pdfIn PDF document text
- http://scouttautomotive.com/editor_uploads/system/files/monowebizisusuzujosav.pdfIn PDF document text
- http://suchanekstomatolog.pl/files/file/nugomiwuzokebe.pdfIn PDF document text
- https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161419f6f245d7---3265473519.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/2e4bc36fafd45fa030e48130dbe4925e/60588693640.pdfIn PDF document text
- http://nilesk.com/userfiles/file/75903521630.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_off0000d26c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD26C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ea7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA7E | 17960 bytes |
SHA-256: 3a54ea6cf932823f4575d2279773d04262f512ff91cf0059cdf54653deb11e77 |
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font_02_sfnt_off00011964.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11964 | 10320 bytes |
SHA-256: 74d8629900e0ac79555719d21258d42dd38810f7e3d7fdcf53126ffb0a67aff2 |
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