MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF is identified as malicious by ClamAV and an ML classifier, and heuristics indicate it's an image-based lure. It contains multiple links to compromised WordPress sites, suggesting it's part of a phishing campaign designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.7358
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 58 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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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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://biancoacolori.it/userfiles/files/78866976070.pdf In PDF document text
- http://autolavaggiocraparotta.it/userfiles/files/xalugimekomuzovakisiwitov.pdfIn PDF document text
- https://a1-recruitment.fr/v2011/Files/fck_upload/file/gudowobixebimejifaxomat.pdfIn PDF document text
- http://polenes.cl/userfiles/file/49869722200.pdfIn PDF document text
- https://nirkongrp.com/ckfinder/userfiles/files/miruroro.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/lepose.pdfIn PDF document text
- https://toptenstudy.com/upload/files/BodyFile__613FCCDB7044A.pdfIn PDF document text
- http://faw-asia.com/image/upload/files/2869896819.pdfIn PDF document text
- http://siddharpeedam.org/userfiles/file/In PDF document text
- http://mygotour.com/FileData/ckfinder/files/20210929_6939247B912E92DE.pdfIn PDF document text
- http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/6lgk0dumgn1k0hb54h6fn6i220/tavuzuxa.pdfIn PDF document text
- https://mmtours.si/uploads/kafufivanuriv.pdfIn PDF document text
- http://k3projekt.pl/uploads/userfiles/files/54237487145.pdfIn PDF document text
- https://www.allduniv.ac.in/ckfinder/userfiles/files/sevezifapozowixonafasavep.pdfIn PDF document text
- https://agrilaui.com/userfiles/file/gelafuviwoluwojavunatepo.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/32ca1f37c4ef490f79937e2b740d753f/30094431899.pdfIn PDF document text
- http://kubablimel.pl/Image/files/zepulu.pdfIn PDF document text
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/98e07iuth5lus63cek83qonud5/gizenutudu.pdfIn PDF document text
- https://hamzakocakoglu.com/userfiles/file/46906840432.pdfIn PDF document text
- http://usaoxin.com/userfiles/2021-9/file/16915646562.pdfIn PDF document text
- http://rtm-plus.ru/ckfinder/userfiles/files/29772602902.pdfIn PDF document text
- http://ieltsadd.ir/cache/fck_files/file/visepezivilulavakilanowuf.pdfIn PDF document text
- http://sushiyaslo.com/uploads/files/zikiwezigemavunivetuboka.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=bendiceme+ultima+pdfPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ae05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE05 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c617.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC617 | 14144 bytes |
SHA-256: 4a87534c089efa62b7a43052d7723eec4966f674fbd6f5b5f4916eebc571ed6e |
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