MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites. The 'utm_term' parameter in one of the URLs suggests a potential SEO manipulation tactic to lure users with terms like 'free robux'. The primary attack pattern involves directing users to external, potentially malicious content through a deceptive link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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 http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16137699206a93---noxugenazilasobexo.pdf
- http://hoangminhceramics.com/app/webroot/uploads/files/25819941547.pdf
- http://iraneto.com/basefile/iranetocom/files/seripe.pdf
- http://herbwaterthailand.com/userfiles/files/xivipogudoviwerigozemo.pdf
- https://turbooto.vn/upload/files/denefebelobag.pdf
- http://gaia-onlus.org/userfiles/file/79250902371.pdf
- http://vo23.ru/upload/file/23995069605.pdf
- http://inica.org/files/file///16736967819.pdf
- http://kuryakyn.ru/userfiles/file/bunidemufonibukede.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/161385c7a83ca7---61492158322.pdf
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/0554d7dcc16bc5f734271f4bc890dfbb/zabevanogipati.pdf
- http://jfhcoaching.nl/userfiles/files/66486340286.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d98189288f---3102041065.pdf
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/aa09fa1774f48019c5678d5d6ef63954/danoxojaserozovo.pdf
- http://101balkon.ru/upload/files/wexewemexujuxilikasosagi.pdf
- http://allier-genealogie.org/File:/labokixopolixesoruronaduz.pdf
- http://mt-filtration.com/uploaded/file/7079872316136e94958615.pdf
- https://tectrongim.com/uploads/file/zejokagosazivib.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=websites+for+free+robux+2021
- 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_off0000e6e3.bin759f3c3165fb7cea955e54821ebc6ecc3792573b46de409fc16d42c30572b477 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6E3 | 10524 bytes |
font_01_sfnt_off0000ff27.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF27 | 16792 bytes |
font_02_sfnt_off00011739.binf9e96739916967a16428d10c28e8395a10cd10e79ca935d0fd45bde6fb466463 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11739 | 18200 bytes |
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