MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ML and ClamAV as malicious, with heuristics indicating it functions as a link farm. The document body is heavily obfuscated, but the presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggest the primary goal is to redirect users to a network of other PDF files. No scripts were extracted, but the overall structure points to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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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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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://slovbau.sk/test/userfiles/file/62901228873.pdf In PDF document text
- https://infotechloyalty.com/bot/ckfinder/uf/files/38052852007.pdfIn PDF document text
- http://sgyscom.com/upload_fck/file/2021-9-13/20210913225850194008.pdfIn PDF document text
- http://nonstopsushi.com/uploads/files/jodizuzifapovulilas.pdfIn PDF document text
- https://diedacorporation.net/freesiafiles/file/48468561095.pdfIn PDF document text
- https://jnnjhansi.com/userfiles/file/68477483503.pdfIn PDF document text
- http://antansconstructions.com/ckfinder/userfiles/files/83150105377.pdfIn PDF document text
- http://cuacuonnhanh.vn/Images_upload/files/viwagototuwu.pdfIn PDF document text
- http://print-printonline.com/ckfinder/userfiles/files/fujupimizud.pdfIn PDF document text
- http://web5gstore.com/Files/files/mulajadifag.pdfIn PDF document text
- https://chief-moving.com/editor_upload/file/98408308800.pdfIn PDF document text
- http://mygotour.com/FileData/ckfinder/files/20210916_E66711A2B5042608.pdfIn PDF document text
- http://ppogrimall.com/upload/editor_image/file/40755205164.pdfIn PDF document text
- http://www.smartusb.info/images/library/File/84285842951.pdfIn PDF document text
- http://studio-rivetti.it/userfiles/files/fofigugokefov.pdfIn PDF document text
- http://loscogliodifavignana.it/userfiles/files/dasejotogixerajane.pdfIn PDF document text
- https://uleshuzataruhaz.hu/files/file/26588019456.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/425849498bbcf86f0f05c27dbbde9117/53296059188.pdfIn PDF document text
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e509d75c1---nediwulur.pdfIn PDF document text
- http://fibertechnique.com/tmp/file/wifogisila.pdfIn PDF document text
- https://protradingindia.net/userfiles/file/nemariwijodopatafekuz.pdfIn PDF document text
- http://dongamold.com/fckeditor/upload_files/file/regofinopizuribagagebedod.pdfIn PDF document text
- http://the-bom.kr/upfile/files/68369271004.pdfIn PDF document text
- http://sklepjola.pl/userfiles/file/jaxuzadurejerisafitata.pdfIn PDF document text
- http://geo-equipe.it/userfiles/files/vazojij.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=all+the+pretty+little+horses+sheet+music+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_off0000dd69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD69 | 18536 bytes |
SHA-256: 82a3406120e9c5b8d438c545ab07702b4a529eb7c5de49f5d961e26d4e726ce1 |
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font_01_sfnt_off00010d9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D9D | 10816 bytes |
SHA-256: 03552c8ef24d944b4abe2f481e6ece0f14d111213073ba245cfd38be0b02faeb |
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font_02_sfnt_off0001269b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1269B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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