MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggest a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the overall heuristic profile indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://huntic.ru/uplcv?utm_term=modern+labor+economics+ehrenberg+pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ksgqp1fejjikkcktct1oria62h/18788508346.pdf
- http://toyotarenta.net/FileData/ckfinder/files/20210803_DF30C910BA467D33.pdf
- https://cecprint.com/images/file/vurujodon.pdf
- http://volamtuyetthe.com/userfiles/file/59664825760.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e4ecf809b40---72360759998.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/a8a271a41538cb255442cd3afd9df37f/419830462.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/q9la67qcbue7sopoake7sj2d3n/10099231403.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611f9db40f00a---54060530829.pdf
- http://www.morrisjones.co.uk/EditorImages/file/56565503802.pdf
- http://jyotiacademicpress.org/uploads/file/vaxikewufedigag.pdf
- https://sjalikave.hu/pictures/file/39945698071.pdf
- http://busangh.com/attfile/fckimg/file///2021070621139_466653864.pdf
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/3d288623f632ecf41a427039abb5e8cc/fedumi.pdf
- http://jamalcar.com/userfiles/file/fonemesamezirotajomo.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/8f4dcc390f7925f1064d0a19d00d6312/tonarapuxesasogow.pdf
- http://valleypainclinic.org/userfiles/file/10435769009.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dde9a7c288b---vovoligov.pdf
- https://condicionamentofisico.com/arquivos/file/6569177830.pdf
- http://shuimotongyuan.com/userfiles/file/mizorewoxewonapegovegab.pdf
- http://thucphamchucnangmy.vn/uploads/files/lewojifileruvifikugitar.pdf
- http://citysuji.com/ckfinder/userfiles/files/26233514576.pdf
- http://www.masozilina.sk/ckfinder/userfiles/files/49795264340.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_off0000b582.bin7049a995d8f11abe45f8ba62dc6f990885a980f99305ab6999954c036e02dd55 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB582 | 16620 bytes |
font_01_sfnt_off0000e05d.binb4a76535f83a83552bd696a83741f8574c98f574b30384549562be2c7fddac30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE05D | 11100 bytes |
font_02_sfnt_off0000f98c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF98C | 16792 bytes |
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