MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Multiple URLs point to PDF files hosted on various domains, many of which appear to be compromised or disposable, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the link farm hypothesis.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/75e1f261ea799bc70e0736e22a4a4693/44340282926.pdf
- http://xfswchem.com/upload/files/vinizigetenogurubipenak.pdf
- http://word.mn/uploads/assets/17951508467.pdf
- https://atl-50.com/files/file/fepetopagifibupajagigu.pdf
- http://murasakijr.com/uploads/files/23350220813.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/79ffa44adacbe8e6bddecf54124cd629/13678672635.pdf
- http://gewoongroen.eu/app/webroot/files/userfiles/files/73896972735.pdf
- http://sunnysideclassof64.com/clients/a/ac/acc4ccb49d7935ca36198347b895393e/File/vajawobomegokavuxibotivek.pdf
- https://worldmedglobal.com/userfiles/files/24276829123.pdf
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b285545252a---pasiwupiweluku.pdf
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/daffb2a4a3b336540d7d6ce085be101c/65017861579.pdf
- http://studiotecniconuti.it/userfiles/files/jixufukamasubo.pdf
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/38644c5beaafdfcf05327f053a3ebf81/xiratom.pdf
- https://supermagnum-bg.com/userfiles/file/55600534811.pdf
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/untrn0fnfmng1rtltrpdhdm5ih/watagejegaxifomopixesi.pdf
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/8fe86d42d381d0168d16c1738c41fe39/jezafulipagafoz.pdf
- http://akvari-um.ru/userfiles/file/goketufomefinor.pdf
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/jmi9ik92kmscluh468bd7do5b2/sonakidugiv.pdf
- http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gatedikabo.pdf
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/e5cc80209e39ab885f947c9a2230d118/negosowoxuxigakevija.pdf
- https://kitapkapla.com/upload/ckfinder/files/lemiburalasore.pdf
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131b7aa01014---28333430843.pdf
- https://strategieb2b.com/userfiles/file/pogovujuja.pdf
- http://lixupeng.com/uploads/files/39164918861.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=hip+mobility+and+flexibility+for+athletes+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_off0000ea43.bin45e25f5250307823469a5fa63039f93c5b9e288391890bb13af07bb77b036029 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA43 | 11112 bytes |
font_01_sfnt_off000103b7.bina5cdf20ced0ccb5c94d3db873eee84f5a5a1b469cfb427a1d630a2aa82026f85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103B7 | 17008 bytes |
font_02_sfnt_off00012fbf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FBF | 16792 bytes |
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