MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to lead users to malicious sites. No scripts were extracted, but the structure and URL analysis strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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 http://busangh.com/attfile/fckimg/file///2021060916641_8485821.pdf In PDF document text
- https://sitpchemcieszyn.pl/_sitpchem/file/81809389639.pdfIn PDF document text
- https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/74m9ckhss09fepvbe1iqpdd2v8/78416706328.pdfIn PDF document text
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b55c0616c---jodori.pdfIn PDF document text
- http://eventcompany.org/clients/e/e3/e30ef11cf4efe639fe6592aa37b9cb94/File/woxumagemanowujodulugu.pdfIn PDF document text
- https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5faac82cc2---4219894559.pdfIn PDF document text
- https://educhina.mn/editor/files/48747484648.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767d0d468a2---49361935802.pdfIn PDF document text
- https://birotex.rs/images/files/59105646874.pdfIn PDF document text
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cacb9529669---topir.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609fdadf6af92---67998762033.pdfIn PDF document text
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f60223e64---72125230606.pdfIn PDF document text
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a19468bda08---85565346374.pdfIn PDF document text
- http://ajtoablakcentrum.com/_user/file/rijaxutozulepok.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/65c9a454d4a7b6bb968ae0cd5eb8af20/93380473269.pdfIn PDF document text
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/ubo9mlf7pgd6kj761bfik7i9f1/vuserelijikosamefesiwata.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbcb027a72---48684573238.pdfIn PDF document text
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/0fda1422737e9bda53df8f2b82c05feb/51887367774.pdfIn PDF document text
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a92a3a6e7c5---wukavajubemidefotame.pdfIn PDF document text
- https://socohoteldanang.com/uploads/image/files/fererobetavuto.pdfIn PDF document text
- https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/ce2t67tqsphc5u5ebgfsk8vdr2/96492662292.pdfIn PDF document text
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160726ebb94a77---goxox.pdfIn PDF document text
- https://alakharia.com/public_html/userfiles/file/12210076168.pdfIn PDF document text
- http://zoncmswebsitebeheer.nl/files/editor/file/42357891309.pdfIn PDF document text
- http://3dsami.org/uploadfilefiles/junorixuvawadaki.pdfIn PDF document text
- http://gpmpoolandspa.com/ckfinder/userfiles/files/zudumosimovupol.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=allosteric+site+of+an+enzymePDF link annotation
- 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_off0000f4e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E3 | 17064 bytes |
SHA-256: f5ab3bd701f35d3e5f64a5e925cefee3f6aa88b92a28d74c29c1dd5561c97bd6 |
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font_01_sfnt_off000121a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121A6 | 10652 bytes |
SHA-256: d4c176cefbefa3b62d9455c24320603e67d7d65a44d51a4015e75a231ba59641 |
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font_02_sfnt_off00013a1f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A1F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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