MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, with numerous URLs pointing to potentially compromised or disposable hosting. The presence of multiple external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the intent is to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/99f63fd01f7be70362ed01320fc05a0a/23870762971.pdf In PDF document text
- http://marketingnews.fr/images/file/rawisikupobavonel.pdfIn PDF document text
- http://tpokebar.com/uploads/files/zateberawij.pdfIn PDF document text
- http://sinocelltech.com/filespath/files/20210908135223.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d5ec3cc1f---76063477479.pdfIn PDF document text
- http://xn--k1akb4c.xn--p1ai/userfiles/file/tenataxifawuzupizunowono.pdfIn PDF document text
- http://davidhammerstein.org/ckfinder/userfiles/files/xixis.pdfIn PDF document text
- http://uptindia.com/newsimages/file///lewopidese.pdfIn PDF document text
- https://solturism.ro/images/file/rabojomim.pdfIn PDF document text
- http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bagur.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/fudopujigetusinafado.pdfIn PDF document text
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4b1ea22cf---lapajejojo.pdfIn PDF document text
- http://remproekt-m.ru/admin/ckfinder/userfiles/files/13903225596.pdfIn PDF document text
- http://mcserpenti.com/userfiles/file/10803670250.pdfIn PDF document text
- https://samsungklimalar.com/upload/ckfinder/files/fipexitunub.pdfIn PDF document text
- https://nffcd.org/userfiles/files/82902251862.pdfIn PDF document text
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16134920ce7285---96372424108.pdfIn PDF document text
- http://francescofesta.it/userfiles/files/kizinoni.pdfIn PDF document text
- http://startmatbaa.com/userfiles/file/kejebexawozelaxa.pdfIn PDF document text
- http://straub-online.ch/userfiles/files/88120553454.pdfIn PDF document text
- http://canxetaianhduc.com/images/file/kipelujenoz.pdfIn PDF document text
- http://knshzj.com/CKEdit/upload/files/muxuranofaki.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=the+fall+of+a+sparrow+pdfPDF 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b16c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB16C | 16284 bytes |
SHA-256: a775ce933c64c98b92250ea2826a8fd1408b0ca33b9e9d6aeeffd054f886369e |
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font_01_sfnt_off0000daec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAEC | 10352 bytes |
SHA-256: a3708dd57ae0aa13a772d482d2ff3cd94450817e427d4f98e65ad33b5d547a1c |
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font_02_sfnt_off0000f286.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF286 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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