MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous embedded URLs pointing to external sites, many of which appear to be compromised WordPress uploads or disposable hosting, suggesting a link farm or phishing lure. The presence of these links and the overall structure indicate an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://inwebjor.ru/uplcv?utm_term=class+6+english+supplementary+chapter+5+question+answer
- https://bywuf.org/upload/editor/files/kerinobobuzojirodatutede.pdf
- http://metabolit-plus.ru/files/file/43690812797.pdf
- http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/74350303221.pdf
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b467e14938d---zefigituroredixu.pdf
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/cbb6fe11fd7afd108db5c66ca26191d0/zosogasowegupu.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16090691c6667f---76060343747.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cfe62621786---68815630197.pdf
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/1a049011268b741fd9a7c1c1fe5ac99e/61287859541.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb7bcd89a7---nisonelenidodumoziwanipaj.pdf
- https://abe-rdc.com/userfiles/file/227845981.pdf
- https://vivaldiroberto.com/img/files/mediafiles/file/48936903206.pdf
- http://noithatnhapkhaugiasi.com/luutru/files/xoruregeva.pdf
- https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8d2008cd4---71009517352.pdf
- https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/da1e62cd2615eff94ad876af871d228b/60757183539.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16079b45a197c9---8278850036.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e8b14b6a4---suseravekuwa.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725857330df---zadarimes.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087d9a6a03ac---vanulatatuzat.pdf
- https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/236tj422replvv4l8jre49647d/71226846054.pdf
- http://handbook.hu/upload/page/file/1380581638.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160adb17a42dff---81141409147.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e17e.bin5427b86a40bb94db676567803eca0b9ff61ed4a2d06ff822245d978289a52450 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE17E | 11600 bytes |
font_01_sfnt_off0000fcaa.bin0e5cfb1e7209be4584ee8583ce901e3373b2634edd1d6aee3814d94f9d876fcc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCAA | 16972 bytes |
font_02_sfnt_off000128c1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128C1 | 16792 bytes |
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