MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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 http://slsnn.ru/content/file/51393122596.pdf In PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/e48094a3d65d0a9781bce546475b5056/bipavalinevonenufigekiwil.pdfIn PDF document text
- https://acgroupenterprise.com/userfiles/file/72011033634.pdfIn PDF document text
- https://ecoretras.com/file/jumiralanosawosuwo.pdfIn PDF document text
- http://55pluscommunityspecialist.com/userfiles/files/10732608983.pdfIn PDF document text
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b523a6e58d4---13080719291.pdfIn PDF document text
- http://broadviewlibrary.org/uploaded_bvlib/file/lodimawox.pdfIn PDF document text
- https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8f95fe15d2a6ad57c64bb268d02295f5/ximepadegavopexoxolepov.pdfIn PDF document text
- http://beijingxinzhi.com/userfiles/file/20210621131645_1755170573.pdfIn PDF document text
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b774d46c7---1734304430.pdfIn PDF document text
- http://meadescafe.com/userfiles/file/51067445494.pdfIn PDF document text
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc97d0ec67---saxumomisedakaxaforujewo.pdfIn PDF document text
- https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bf98087fb41---75609989126.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160bc54a27dc58---78773925450.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=class+9+rs+aggarwal+book+pdf+downloadPDF link annotation
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0b13aa419---fifalatowivagewo.pdfIn PDF document text
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000db43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB43 | 5564 bytes |
SHA-256: 29f7b541247095bca1b5493fca02f96953235e14b48472c14eac4fbbeb668424 |
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font_01_sfnt_off0000ee43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE43 | 11052 bytes |
SHA-256: 9f5e9a20af9cc5f9d70ee30dbfb881fe822b1e2023f66d70a77365dff9897225 |
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font_02_sfnt_off00011418.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11418 | 5360 bytes |
SHA-256: 730f99d0a168b14d01ca5bf2028782dedca79822f73c5740506ffcb65868e427 |
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