MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the final malicious destination. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
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://pfollowers.com/ci/userfiles/files/ruvugutanawa.pdf In PDF document text
- http://robertoantoniz.com/resources/original/file/49407488238.pdfIn PDF document text
- http://unixsensor.com/uploads/files/202109091155098585.pdfIn PDF document text
- http://autohondl.cz/userfiles/file/864019838.pdfIn PDF document text
- http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/86297261772.pdfIn PDF document text
- http://taborgospelassembly.com/userfiles/file/83353918337.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/3c1792760e58dee286ce7a9cdcf6408e/biwekipaxixelumiso.pdfIn PDF document text
- http://maxbrio.kr/files/files/jafuvifopasosutazu.pdfIn PDF document text
- https://ciela13.leaddeehub.com/userfiles/files/8227065287.pdfIn PDF document text
- http://gloteckr.com/upload/editor/file/54694812544.pdfIn PDF document text
- http://whuntex.ru/userfiles/file/besediwulaganoraxulesi.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/73a3ff35a8e038d6466b9b7f79880d95/72197466971.pdfIn PDF document text
- http://uniradioweb.info/userfiles/files/xalalulikekenawowarilefiv.pdfIn PDF document text
- http://na-bytecek.cz/UserFiles/File/mavavatinimegutewamutu.pdfIn PDF document text
- http://at2apigroup3.com/contents/files/98749746313.pdfIn PDF document text
- http://betonkeritesek.eu/Content/files/xexavebuxuputewesakujokok.pdfIn PDF document text
- http://gpsputhuppally.com/userfiles/file/99362681754.pdfIn PDF document text
- https://www.aicsmindia.org/ckfinder/userfiles/files/9574570092.pdfIn PDF document text
- https://n-v-v.dk/userfiles/file/82579542269.pdfIn PDF document text
- http://strahovka66.ru/userfiles/file/16950379951.pdfIn PDF document text
- http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/miramamazariwatamutetume.pdfIn PDF document text
- https://phm.vn/upload/files/fewusexitatido.pdfIn PDF document text
- http://travelci.ru/ckfinder/userfiles/files/8556998894.pdfIn PDF document text
- https://khanoomhoteli.com/basefile/khanoomhotelicom/files/30803137454.pdfIn PDF document text
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139c1aa4593c---jimakol.pdfIn PDF document text
- https://limadelimon.com/images/file/jesubiwivajuledi.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=edit+photo+online+androidPDF 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_off0000bc09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC09 | 10304 bytes |
SHA-256: 85c6d15bca83ba911be0b72864226524c4968a56203e70a46107dae0f7d7093c |
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font_01_sfnt_off0000d317.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD317 | 18488 bytes |
SHA-256: a2784fb9ebc4b6a9f7617e1e8ea2d30cb289486999d53faecbe1d86c106b46fe |
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font_02_sfnt_off0001031a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1031A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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