MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple compromised websites, which in turn host other PDF files. This suggests a tactic to distribute malicious content or engage in SEO poisoning. The ML classifier strongly indicated maliciousness, and the structure points towards a multi-stage distribution or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/782d6d4965c66b687b7b4a60dd19b5e6/13674823690.pdf In PDF document text
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16087f497cce65---7809831730.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160722cb8e60cf---67737384445.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/98c9084179ee90b9addcc547baaed205/74808713300.pdfIn PDF document text
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077700845fb0---1885278003.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606eeab773025---78232760336.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/0621f961bc6bfbeb5f09ac2f5fb649d9/72026536645.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/53897ud69n26e8k41eolr87jf5/66464906052.pdfIn PDF document text
- https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/hsshrnr23lv2jnlupni3gnkh9v/39808668162.pdfIn PDF document text
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608604878a449---tebedamejipafumotibes.pdfIn PDF document text
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/461a38e549243dc94efeff60fc645027/75220857902.pdfIn PDF document text
- https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/u97s91lh9m6ddcdc85tsquebc1/melajitubovum.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160766e856990f---53989953343.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/a20ss6gsqmpkmsiq10e57mb86v/wufojowesu.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/YTWXjIUwRh0/uplcv?utm_term=misumi+japan+guidePDF 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC85 | 10652 bytes |
SHA-256: 0402543e37c775fde066aaaffe56050a872ce68cd1b49154dd2c1cf6e9df169d |
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font_01_sfnt_off0000ff86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF86 | 5232 bytes |
SHA-256: 0a4ea7076cbd872c686ea918efcd86654de3760362ca9b38c36e7d86e1080410 |
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font_02_sfnt_off0001114e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1114E | 10488 bytes |
SHA-256: 97fd9270c1d4ecbf66d2ea8608201c7a6ada9480d084a845c073e6ed880927de |
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font_03_sfnt_off00013575.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13575 | 17004 bytes |
SHA-256: 288da54503b86294f929406047c468bf33967a8521671a4cada1b66a6934d3c8 |
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