MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS uploads, suggesting it functions as a link farm. The presence of external URIs and the overall structure point towards a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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://nomylo.ru/uplcv?utm_term=chemistry+chapter+12+assessment+answers
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/d8ps6nnjfsq4vfd7cs5mv149cf/62440351146.pdf
- http://csc0351.com/userfiles/file/20210618140710_iv20j0.pdf
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0952d6bece---79035262822.pdf
- http://www.ez4parcel.net/upfile/files/2021/06/17/98321157741.pdf
- http://assytekservizi.com/userfiles/files/37782770245.pdf
- http://dlt-nkp.com/fileupload//file/fugefelawo.pdf
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/8143785e3f83b345e121b6bb84610b3a/85825193773.pdf
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/c3ea1d336b9fa57f7721304323b58a00/xiwada.pdf
- http://agcslohian.com/userfiles/file/41465187419.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16092b226bdbd1---24564892859.pdf
- http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/76975779f2914b3a456094e8e72fce6f/xatuzuzixujufekaretipeb.pdf
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aafe4628180---gupivuzujarifu.pdf
- http://bioscipublisher.com/files/upfiles/file/tozabegidavufejuvipax.pdf
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bea37320fc0---52393783805.pdf
- https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/d17006ac19f43e3f713f4b4e54b40a81/21769531972.pdf
- http://anhbanglaw.com/userfiles/file/20706392647.pdf
- https://dimensioninteractive.com/WYSIWYGImage/file/1418375599.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/69bba1bbe727176a53f0d9f2ce013c95/gapepenelejolatif.pdf
- http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/887b397a5caa4a9728dc5dd099fda38b/68755622964.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/5sh0sghfdbom9habuvbduba600/38208791216.pdf
- http://asbufestival.com/uploads/FCK_files/file/33181601973.pdf
- http://nanumed.ro/uploads/files/jokunejibot.pdf
- https://kitapkaplama.com/upload/ckfinder/files/51557791091.pdf
- https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/2oh2kt75idmpkeldrja3liuoj0/gabezevifigozuxinile.pdf
- http://myappartement.de/web/editor/files/25023338207.pdf
- 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_off00010a40.bin58fa6d1dbf903732388797f3792eb6b8440b8561a4884bff6cf77af58e36a762 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A40 | 17344 bytes |
font_01_sfnt_off00013800.binf12c2a5455cc674c9f0dca64e02e98784b1296e073e052eeeaf10de0ce164d71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13800 | 10876 bytes |
font_02_sfnt_off00015129.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15129 | 16792 bytes |
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