MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to potentially compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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://pfhotel.gr/ckfinder/userfiles/files/wilipitewusoj.pdf In PDF document text
- http://avsa.org/sites/default/files/images/files/43881003043.pdfIn PDF document text
- https://askisan.com/upload/ckfinder/files/kanoto.pdfIn PDF document text
- https://sunridgecorp.com/uploads//files/202108070146105568.pdfIn PDF document text
- http://ptaki.info/imgekoprojekty/files/30663123707.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c5d30155d4---52701309005.pdfIn PDF document text
- http://alibabashipping.com/userfiles/file/29146937687.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/6de3234aeb8896ad2b51c76e5570a376/16404167379.pdfIn PDF document text
- http://angelojrobles.com/admin_initial_test/userfiles/file/88060391566.pdfIn PDF document text
- http://techbis.pl/files/file/7530236155.pdfIn PDF document text
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/fecgt2rga82up97duafq4odbe3/9487927295.pdfIn PDF document text
- http://dorrstrechy.cz/UserFiles/File/ravomogiwezoxofobuxoli.pdfIn PDF document text
- https://arerp.kr/data/file///somediputeluzewopawelapo.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16077c7bded9f7---51833513120.pdfIn PDF document text
- http://p-jtech.com/userData/board/file/64488702763.pdfIn PDF document text
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0760edff24---8907470562.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849acd019c5---xagemitem.pdfIn PDF document text
- http://aihyang.com/userfiles/file/75466959478.pdfIn PDF document text
- http://usaoxin.com/userfiles/2021-5/file/kazupuwerexotikelox.pdfIn PDF document text
- http://sieuthivatlieuhoanthien.com/upload/files/xusovezaseke.pdfIn PDF document text
- http://phongkhamthienhoa.org/images/files/19481563659.pdfIn PDF document text
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/fd231c497b0dd161706cfe3ad82effc9/mesugori.pdfIn PDF document text
- http://pusheng168.com/uploadfiles/20210805170024.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=comportamiento+humano+y+organizacional+pdfPDF 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_off0000d223.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD223 | 11204 bytes |
SHA-256: 336736a7c67f8ef2e2a605856958d4a4322754d5349c0307be9f050754086097 |
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font_01_sfnt_off0000ebfa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBFA | 17432 bytes |
SHA-256: dde2f4e8ef0cc1f74511b268cd20833da58d4e8107cb92ea4db019e8be91e1a4 |
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font_02_sfnt_off0001175c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1175C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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