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 phishing or trojan distribution attempt. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of external URIs and link farm heuristics strongly suggests a phishing or malware delivery vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9834
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://krisoc.ru/uplcv?utm_term=iterative+inorder+traversal+without+stack PDF link annotation
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0f1371472---lugikuj.pdfIn PDF document text
- https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/8q0899jh4befr68484bmdi7b76/pibiseremefuko.pdfIn PDF document text
- https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/633e33df31a1b9ea5d6a8b0e87ddce29/mizelidemarizojuranel.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a18f4683dd0---56963424447.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/b2be252bd5a07dc3cd66663d1da3f197/89375265138.pdfIn PDF document text
- https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/55a53dd21a1fe827c5ecd55515343590/50212253189.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd75f60dfc---liroson.pdfIn PDF document text
- http://unseretochter.ch/images/file/demipazodujukunop.pdfIn PDF document text
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8710ec8d9d---53690407666.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606cde0a0d032---minatatigevaweluvusonad.pdfIn PDF document text
- http://khanaphatgroup.com/UserFiles/file/43651544029.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83dfe2e006---duwelexirogugefoxaz.pdfIn PDF document text
- https://open-call.fr/uploaded/files/19422371966.pdfIn PDF document text
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870b6d4a90f---xaravebaxijafewikupome.pdfIn PDF document text
- http://akgikorea.com/file_upload/fck_upfile/file/86970208885.pdfIn PDF document text
- https://247hvac.ca/fabulous1/uploads/files/52378786296.pdfIn PDF document text
- https://imagebeaute.fr/userfiles/file/didodenurafikudeke.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/34506b97bd874159c4dcce36af78f5f5/suxixoxogojugubexufoxoxek.pdfIn PDF document text
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a3d172370---voxemekam.pdfIn PDF document text
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9bc1a7387---pafaxetofatuzofof.pdfIn PDF document text
- https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd390692df---valigulaninimudu.pdfIn PDF document text
- http://geraldkleinlaw.com/ckfinder/userfiles/files/laxato.pdfIn PDF document text
- http://soft-pro.hr/upload/datoteke/robugafi.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3fc60122d---53922009809.pdfIn PDF document text
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f24d91dab---52477596664.pdfIn PDF document text
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/a7c58827e9a1197ebc5e19bb74ce5442/25152586056.pdfIn PDF document text
- https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/fm46esrsh7sanuncstn65tdnmh/manolemokiri.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_off0000e322.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE322 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fb39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB39 | 10760 bytes |
SHA-256: a4d01f9f9db47ec4a230ad7023827cc5096ca635a9f47ff634f3b8002bef505a |
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font_02_sfnt_off000113f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113F7 | 17648 bytes |
SHA-256: 5cb5de63bfb2e12b867c5539288c10c33530a834d93e6af8fee5518e6b053c13 |
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