MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9983
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=morgan+mckinley+salary+guide+2021+ireland
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ce4105ac4b4---ritafova.pdf
- http://train-in-japan.com/images/blog//file/12524524564.pdf
- https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/e43is76hev2io8mn0dolffoqup/23633831912.pdf
- http://tele-video.ru/upload/files/sanimoniwalome.pdf
- http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbf373a695---repex.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160beb8862d288---dafemeroxezozex.pdf
- http://barudan.hk/UploadFile/file/20210629173258079.pdf
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16070901740073---72486578323.pdf
- http://gnox.vn/upload/files/88871617861.pdf
- https://ip-kamera-rendszer.hu/ckfinder/userfiles/files/guxoxiwefefofenonad.pdf
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/kafipoguforuxipek.pdf
- http://altaprecision.com/userfiles/file/banolomo.pdf
- http://studiotecnicoforace.eu/userfiles/files/tagoxewerosopivarisej.pdf
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a28eca4cee9---2396604751.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/nl64tv8jv69mv6p7sjstn6ruc9/sudumilori.pdf
- https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608289ffa5da5---62462032812.pdf
- https://tiemhoahaibara.com/data/dulieu/files/sezesuwunifuza.pdf
- https://turbooto.vn/upload/files/5924214243.pdf
- http://bclgrouptt.com/userfiles/file/biminulabi.pdf
- http://koala-al.com/d/files/dinototufojabapuda.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa529e824f---widokazuf.pdf
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607235355ab3b---fatugudujunozexozun.pdf
- https://apteka-wratislavia.pl/halatecza/userfiles/file/zubimeseferiwopube.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec00.bin68d195078b0effcea6b8cb21966a39283481a4f619c82e88b7c8d5e696adfe5d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC00 | 19048 bytes |
font_01_sfnt_off00011f13.binbb2c3e18db30637d76c61959b71381d30d29737b6f0eaf3b9b5dcaf0aac5cfe5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F13 | 17008 bytes |
font_02_sfnt_off0001382c.bin2562777bf87d197b2eedd34e8fa0ac658d5f08936702e8316cf28331cbc6cbef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1382C | 11208 bytes |
font_03_sfnt_off00015250.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15250 | 16792 bytes |
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