MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users. The presence of a 'pdf compressor free download' UTM term in one URL indicates a social engineering lure. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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://daming-school.com/userfiles/file/lirovab.pdf
- https://aspirans.com/files/file/17434698674.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/taeeqog69is5leue8ntc0f9fvi/lewizidesezopijesoxu.pdf
- https://mountmoriahcamp.com/media/19297419987.pdf
- http://szentimresiklos.hu/upload/file/69958008288.pdf
- http://studioambienteterritorio.it/userfiles/files/20000455746.pdf
- http://capitaloffice.pl/fotki/file/webegiwik.pdf
- http://ahkkpcm.org/userfiles/71412195611.pdf
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f75a498b7b0---tavuxajexezijuvuzu.pdf
- http://poexali.org/static/image/_u/system/files/84752932208.pdf
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb3cd42752---garepofifetinipipole.pdf
- http://china-engine.net/ckfinder/userfiles/files/rojufugalamidiwuno.pdf
- https://grancom.by/upload/docs/jugidewigosefilalevuxizo.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/n2ehjdd7il5tkmmbcknd01qtvd/dirapuvutupe.pdf
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b477b2ba7cd---pufenituv.pdf
- http://sanfrancescovet.com/userfiles/files/62770754918.pdf
- https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/1hn90cc1cn43ge83kmebt9uh4c/13949223921.pdf
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608041027e82b---famijesetajero.pdf
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/vg40m9df64u56j08ruhtookp35/99476915850.pdf
- https://phr4u.com/files/53204057878.pdf
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/bb7d1f4fff134018dc3bd36959e5df13/25850613826.pdf
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/vd6gk0bh0gnd26otb6jai0u02r/32870255405.pdf
- https://elnativocoffee.com/silver/upload/files/44985435608.pdf
- http://promador.pl/userfiles/file/59926096175.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=pdf+compressor+free+download+filehippo
- 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_off0000dc0b.binea9ce33a824812b8402933e51210105362bdf0fd77442ba9c8c4848530475161 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC0B | 10876 bytes |
font_01_sfnt_off0000f4fa.bin682a0d9db281cc0aa1581a99e5aba3a28a1d2c9779b3182e8f5a12861fce8e1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4FA | 16644 bytes |
font_02_sfnt_off00011f4e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F4E | 16792 bytes |
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