MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, many pointing to compromised CMS upload directories and disposable hosting, indicating a link farm designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware distribution. No scripts were extracted, but the extensive use of external links is the primary attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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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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://huntic.ru/uplcv?utm_term=bcps+study+guide+pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/cf840504c9aa9167e58931aef622e2eb/33556197066.pdf
- https://coonvalleycc.com/userfiles/file/guguminanow.pdf
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcbdd7b44b---20627471657.pdf
- https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/d77f8f12d292d696eae62989223e0cf7/21614484563.pdf
- http://wahibluedevils76.com/clients/5/55/55d7338a7abcce318bc847d7f34994f5/File/23872444172.pdf
- http://verduciautodemolizioni.it/userfiles/file/nodetokenexezumawewazi.pdf
- http://buergerforum-tirol.at/file/72676415387.pdf
- https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/ijp886kj911bv2mhun31mhitre/kowakukikavoxup.pdf
- https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/c162e5f04567b28a9ff18bdf3de959f1/xevogowoteruvoxemubulu.pdf
- http://bluecars.pl/userfiles/file/xagosipifudokax.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//rofusatomopevujit.pdf
- https://bawaniint.com/ckfinder/userfiles/files/kofibanob.pdf
- https://hotelindigha.com/FCKeditor/file/wipewigikugozimoxufenoxuv.pdf
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866b26e71d6---75229913824.pdf
- https://amatnieks.lv/pictures/image/xijax.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d69093cd46---limipi.pdf
- http://akssert.com/userfiles/files/pujowubasekaraxunenuxefe.pdf
- http://bacviettech.vn/userfiles/file/30227398863.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3bffa44dd---xumomakusenuz.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1b277522a---mozekexowadevoz.pdf
- http://fishtech.org/uploads/userfiles/file/file/kalenalasu.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ecfb315bc0---xoxinurezifivofare.pdf
- https://feniks9.ru/ckfinder/userfiles/files/8968204329.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/3m85cn68anklstgirgtqdv8ht2/47691626127.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_off00010f32.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F32 | 16792 bytes |
font_01_sfnt_off00012749.bin5a77a88b2a07b417505f724bba8a87b7b0eced2996355fc77e9828c2a5f32bcb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12749 | 10532 bytes |
font_02_sfnt_off00013f44.bin700376a064d9fc25ec5c98a119fd2644c50267fc5c81f2d23ff128adbfd11490 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F44 | 17800 bytes |
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