MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a 'link farm' heuristic and the compromised CMS upload link finding are key indicators of this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 7
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://gyogytornasziget.hu/uploads/files/bejevogadiduga.pdf
- https://cmfnepal.org/userfiles/files/sosimaxe.pdf
- http://www.smpnuenen.nl/images/files/64092720575.pdf
- http://adhdesign.de/userContent/files/20210912024830-10654724087.pdf
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141cbace76d0---94320456318.pdf
- https://jooli.ru/ckfinder/userfiles/files/letunovanajepizevur.pdf
- http://15881588.com/ckupload/files/33074594440.pdf
- http://zxpgw.com/userfiles/file/3814063050.pdf
- http://brcassociati.com/userfiles/files/widamipoz.pdf
- http://www.neoneophytou.com/ckfinder/userfiles/files/96646501795.pdf
- https://alpinashop.rudy-ra.com/files/digowisedifezonulujavolo.pdf
- https://bimstudioinc.com/media/files/21983267978.pdf
- http://mmckno2010.zkosuchdol.info/files/3736440529.pdf
- http://www.motionmantra.com/userfiles/files/sogewikufevegezaz.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140bc7a1b0ba---mefobuxakodetesovezufofo.pdf
- http://fruitsad.pl/images/file/zufigigonadorogitiwupi.pdf
- https://www.stock2morrow.com/ckfinder/userfiles/files/39004549707.pdf
- https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143d52ea692b---jatapoxeremaruvetefesi.pdf
- http://medianet2000.net/amm_prod/image_news_popup/file/kikefomerefirafexaralewol.pdf
- http://studiolauramoschini.it/userfiles/files/suzexemiv.pdf
- http://kimwendelldesign.com/ckfinder/userfiles/files/60384627616.pdf
- http://www.wcd.com.tw/ezadmin/ckfinder/userfiles/files/25594592054.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=sniper+3d+assassin+gun+shooter
- 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_off0000d1b2.bin23100ec9799bc8a5c0ed39759dbfeae3d27c83c993b803c70a0d663631c033d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1B2 | 18604 bytes |
font_01_sfnt_off000102c3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102C3 | 16792 bytes |
font_02_sfnt_off00011ada.bin7ca49e7e0e7e7799eeababe44f8d4f0416fa4c0d566e31a18326195181107d8f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ADA | 10972 bytes |
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