MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites, disguised as a resource for interview questions. The presence of external URIs and link farm heuristics suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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 http://aihyang.com/userfiles/file/ribukefufe.pdf In PDF document text
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/ulk60stbt1oj22cs85b5vigfo5/13382910613.pdfIn PDF document text
- http://hillcresthigh1971.com/clients/9/9f/9fbf9047a6869172a982db6f42f05a9a/File/86307284460.pdfIn PDF document text
- http://autodilykanka.cz/cmsimple/images/file/vupapisibomaxebejego.pdfIn PDF document text
- https://marlin-aquarium.ru/ckfinder/userfiles/files/tegalu.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/43511684730.pdfIn PDF document text
- http://abnicum.com/files/file/gibilugigobara.pdfIn PDF document text
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcad71e92b---rozovikako.pdfIn PDF document text
- https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/97c758ac834d0a9c4489270ab342f2a8/43368307662.pdfIn PDF document text
- https://petrovsky14.ru/docs/files/36848742953.pdfIn PDF document text
- https://kvkumariajnkvv.org/singhania/downloads/file/ziwufuf.pdfIn PDF document text
- https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bb5f933a0---41906873380.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160be41b7a2b78---76935989437.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c37f8893bb---34256293349.pdfIn PDF document text
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/84829tjdvb1158ajuug3b9hpbn/lajebelamupidujebutuwoz.pdfIn PDF document text
- https://rsun.pro/admin/ckfinder/userfiles/files/nofotiduluwosozaxugirok.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-5-13/20210513052353148297.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=purchasing+manager+interview+questions+and+answers+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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e383.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE383 | 5816 bytes |
SHA-256: d00c8e0fabac179a01eb821037937034f4f353cb4998a1ebbfcfc00f2f0847fe |
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font_01_sfnt_off0000f72f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF72F | 10564 bytes |
SHA-256: e893fb8a2d8ed7b666ae275bd79b157f2c0ae398cabe32999447a7b2672f14c8 |
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