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 0.9995
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://sillajen.com/fckeditor/_upload/file/82595981782.pdf In PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/8c84e0f4a2b8670caee75dd4f0530d0f/fegisajosoluwotatij.pdfIn PDF document text
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccdea9b97c---50555606138.pdfIn PDF document text
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/59d4255597d7d4928c8163ec0e3d895f/juzinasopativurutafak.pdfIn PDF document text
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f0a2988bd---tudexisowopizu.pdfIn PDF document text
- http://sushi-belovo.ru/files/3489374943.pdfIn PDF document text
- http://hongshengfish.com/uploadfiles/2021060902560893755.pdfIn PDF document text
- http://koszyczarek.pl/userfiles/file/36525744200.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608766ee635d3---97607845271.pdfIn PDF document text
- http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/8kmqcf6ut7ro231h2juunu5kj0/80630434994.pdfIn PDF document text
- https://angkoronetour.com/userfiles/file/1941210971.pdfIn PDF document text
- http://www.serenissimaservizi.com//files/gunepofuzizesagixoradodu.pdfIn PDF document text
- https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/8e5bb3d0647bf4e5b1722c543a8340be/detagusar.pdfIn PDF document text
- http://skpizzasubs.com/uploads/files/61533624482.pdfIn PDF document text
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/8acfb44f93d50251048ca0ce6206ffc0/gevawejetis.pdfIn PDF document text
- http://dlzj.net/upload/files/20210617145014288185.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/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=gta+san+andreas+mobile+apk+obbPDF 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e225.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE225 | 5340 bytes |
SHA-256: 316ab9761c55dcc6bc36db1187f9853aa0c20a2dbe8bb41d77069cff8075469a |
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font_01_sfnt_off0000f42e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42E | 2364 bytes |
SHA-256: 679cc1c827580a17ee3a36e6a39cb7227d849df8aceaef415f76742906c6baa6 |
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font_02_sfnt_off0000fee7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEE7 | 14468 bytes |
SHA-256: 2c82694b9b6179c59866b4ffb9bab04fe9956a81b1aaa55018b1d0e2b7ab11fc |
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font_03_sfnt_off00012992.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12992 | 16332 bytes |
SHA-256: 8cccff1e3b2106167e1b49795b43f5724ad7adbe3698728996d2427f9c6a33e5 |
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font_04_sfnt_off00013f3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F3B | 1736 bytes |
SHA-256: 5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff |
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