MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a link farm pointing to numerous compromised or disposable hosting sites, likely intended to redirect users to malicious content. The presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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 https://laatjehuisweerstralen.nl/upload/file/45003363412.pdf
- http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c675a3476d---52423431349.pdf
- https://africanresearchcenter.com/userfiles/file/fojogozekigawojusadukesa.pdf
- http://absolutelyneon.com/userfiles/file/91770704851.pdf
- https://cupanghitam.com/contents//files/89923601774.pdf
- http://dogalakustik.com/depo/sayfaresim/file/bevewimugud.pdf
- http://propellerclubsandiego.org/uploads/files/98811639147.pdf
- http://anhuishangbiao.com/upload_fck/file/2021-5-10/20210510192853745364.pdf
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/d9c9a767ed0929567e90c05e59d107a1/11345417592.pdf
- http://venusland.vn/app/webroot/img/files/dulunax.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/20003f563e045b4117fc5f478c003519/doguzuzimesebonelojafoz.pdf
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7cc23a9867---14837055455.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a575d6d7a14---nupekekuv.pdf
- https://ctners.com/ckfinder/userfiles/files/14124402347.pdf
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607735eb84432---nelimo.pdf
- http://olguanaokulu.com/upload/file/48189551423.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/l2a2utk5vrc3vgkhko62nvv985/36209292648.pdf
- http://knuhpharm.kr/userfiles/file/20210813235620.pdf
- https://bcbc3399.com/upload/files/32479981139.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/20f6009a5eb8f1025e958e2a74d216fc/7200000759.pdf
- http://yakutiaprime.ru/SITE/files/editor/file/xodigafufe.pdf
- http://thaoduocvn.com/userfiles/image/file/juritadazepowovuruk.pdf
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5844de69e---32574032606.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=solving+rubik%27s+cube+methods
- 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_off00010ca7.bince468bc5def3cef39d5784ef93b335b4274f713a8cf8c087d91426c902625244 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CA7 | 16912 bytes |
font_01_sfnt_off0001385c.bindae7799eedc6e224784ad4e438aaba13a81a4e6bf83f844789537c3e366e3b4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1385C | 11160 bytes |
font_02_sfnt_off0001521c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1521C | 16792 bytes |
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