MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, further obscuring its malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://cructi.ru/uplcv?utm_term=cutaneous+anaplastic+large+cell+lymphoma
- http://camwater.org/media/files/12584266171.pdf
- http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/44303671342.pdf
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/28afa23182cd94096d375cc3e49b09a3/kakorabije.pdf
- http://rford67613.com/clients/a/a2/a20594cba7d6fe247bc87ef9b80620db/File/66476768418.pdf
- http://blevy.com/ckfinder/userfiles/files/pojajiligonexewadikibewa.pdf
- http://colescastle.com/clients/875019/File/94256169313.pdf
- https://dutchfansitenetwork.nl/ckfinder/userfiles/files/saxogovabirimodotode.pdf
- https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/74tnmelmtect3e196oaeckq8bs/39343077692.pdf
- http://bclgrouptt.com/userfiles/file/83210939442.pdf
- http://omg.su/upload/File/2482345314.pdf
- http://theettiaresottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/9694175475.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a76e5b018a4---tipoxowemi.pdf
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd8e69e428---5464715648.pdf
- http://kolasinprevoz.rs/slike/files/judanufolojofuwodinosasa.pdf
- http://dgjst.com/upfile/file/42532291923.pdf
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cd012da4b---71138949077.pdf
- http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bdef68ac1a5---xizapaxej.pdf
- http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/64mrpc07dsjd3a8jus9e6ltrg4/nukewipi.pdf
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160e5716dd4963---lafawujupupowobopipefan.pdf
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/4928634a09012d10556c4a752adc1cd0/92329174568.pdf
- https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/57bb5ba4b8fa9fc150dbe575b11ccc39/14198618581.pdf
- http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160753565f080d---fanowuvolawajafoxigukixep.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/wepolefizatorozijuwoxiwok.pdf
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085a62c2fd17---dawiku.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_off0000f258.binf0bd0ba262ce590c73e35e373f645bad57ad45be0436ce50fd3a128cfa32b92f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF258 | 11064 bytes |
font_01_sfnt_off00010c02.binf40938a7c21d0945d754608cef7add022122f57c1830bc5c8579a3d8cc5ccaf7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C02 | 16940 bytes |
font_02_sfnt_off0001379e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1379E | 16792 bytes |
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