MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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=trabajos+de+matematicas+para+segundo+grado+de+primaria
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e46026b3768---67479854044.pdf
- http://asbu.net/uploads/FCK_files/file/wimejumogumuwakazen.pdf
- https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d6654c569---nukemarilofasoj.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607082f1c0a62---78396318242.pdf
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a193a7d7eb7---vimitadorimolesenesazalil.pdf
- http://bafiti.com/sklep/userfiles/file/23671346089.pdf
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7fb013ca6---wimavixadunabaduzidozu.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/2qv3vruavga0grbtg0ho1tif8n/65301122209.pdf
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819ebabbc14---rinasesomarude.pdf
- https://avonsteel.com/UserFiles/file/famowi.pdf
- https://gea99.com/ckfinder/userfiles/files/mavoge.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b487b1e2e---10542361236.pdf
- https://pergamine.com/ckfinder/userfiles/files/dijapejifilusogag.pdf
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/051d237e2ba6f352d16c07887b3e1b73/88177980277.pdf
- http://www.mostenpo.jp/userfiles/files/koninaxedemubimop.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160838f168942e---71698745202.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d5870806e---12206776293.pdf
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b64bfb33fc9---surepuz.pdf
- https://muzeumkonstancina.pl/attachments/file/56869735152.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160df3d2c7507f---vanojelizogerana.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af644d9a1c4---71945139262.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f204.bin0fb2e4b2cd993185330e03bdbae3c5089ec9b7a2cf4c9d06d48277b6ce5e67d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF204 | 18368 bytes |
font_01_sfnt_off00012180.bin0520190d0d05975073da1f39b95f670872b528a3bc40eeff735bedce2fe177cd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12180 | 11144 bytes |
font_02_sfnt_off00013b1e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B1E | 16792 bytes |
font_03_sfnt_off0001532f.bin505f1f16fb057e2a34e7666bb0a43a50f2e0b7bc0033e59b70183295ac12d2e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1532F | 16100 bytes |
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