MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to multiple distinct hosts, many of which appear to be compromised CMS uploads. The embedded URLs suggest a redirection mechanism, likely to phishing sites or malware downloaders, consistent with a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
Heuristics 6
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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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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://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608522542380c---milogif.pdf
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/0b63d46c3e986e4fc8208fe714e33951/14917244132.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b786eef8be---puwaxosokomeloxekafatu.pdf
- http://sumtinathholidays.com/admin/uploadfiles/file/buxipoxerewaki.pdf
- https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a45e854e2d---31743322981.pdf
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/02bqamgtcqojgok0u9m7da2r92/1479032631.pdf
- http://deficanderel.com/clients/6/67/674a09facce11b7629d390eef9534ff9/File/909206146.pdf
- https://narimasu-chintai.net/jcfiles/file/74535879045.pdf
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/e41dfe0753e49f114b091f68c92402fe/guzatipabaf.pdf
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b028e080fd5---xiwunutotefim.pdf
- https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/c3c09c742bdc7ebb49357d05d46bf2bc/40380101194.pdf
- https://vgi-vn.vn/app/webroot/img/files/33291565704.pdf
- http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4b0806330---29311244355.pdf
- https://ahreco.com/uploads/news_file/xeniza.pdf
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/c6641a16cae0be30da20e2f48ee2b27b/71848766709.pdf
- https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/8615e5fa5747f7ed31954021c319757c/sosalisuragevixuwinib.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/4fece6388fbe6eded2338ddfcdb5c638/vasogedegifuxuta.pdf
- http://northwestpixie-bobs.com/clients/e/e1/e1941a3904c49320334fd90e0ed9e852/File/betemifozunax.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160abe2e64ef77---tikefudojefov.pdf
- https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/e2v5i566ljt5r0iffkdl6vrufb/15840354444.pdf
- http://thebeautyofdesign.nl/ckfinder/userfiles/files/18822475770.pdf
- https://aradovan.com/userfiles/file/xedodagesu.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/d50856aa18cb9ad6f26d62d15e501bc6/82559044962.pdf
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/6a671e154a764c8f1e3e5c5ae5ecb414/47708052752.pdf
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b754059fa25---41541943540.pdf
- https://dbjadow.pl/attachments/file/74276126119.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=project+almanac+streaming+free
- 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_off0000cf9c.binfb088b133fa119faae64d8446231f24b4150c9e54afebab48d65cd53a5bcf87d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF9C | 16616 bytes |
font_01_sfnt_off0000faff.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAFF | 16792 bytes |
font_02_sfnt_off00011316.bindf02ac5293a332a4e46b1cf5bb5a5393aeb7933dcab93f9633a5a575fde593ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11316 | 10808 bytes |
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