MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The presence of embedded JavaScript and a large number of external links, including those hosted on compromised WordPress sites, strongly indicates a malicious intent. The ML classifier and ClamAV detection further support this, flagging the PDF as phishing or a trojan. The embedded JavaScript likely serves to execute malicious code or redirect the user to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://chcial.ru/uplcv?utm_term=remote+exception+android
- http://www.bargiel.com.pl/ckfinder/userfiles/files/87094650044.pdf
- http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/wewozimituxikomo.pdf
- http://bongoes62.dk/userfiles/file/92698748583.pdf
- https://bilalyapidekorasyon.com/userfiles/file/nerusanevo.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c6b331a3fe3466c5aa99e4c9015c3399/78995898426.pdf
- http://wadirumshootingstars.com/userfiles/file///82258226313.pdf
- https://suativisamsungtaihanoi.net/upload/files/18367306326.pdf
- https://aynispirit.nl/userfiles/file/90040488746.pdf
- https://kasihpaham.com/contents/files/96256934574.pdf
- http://autosoftware.company/autoresponders_images/files/6315868837.pdf
- https://gastriklandsbf.se/UserFiles/files/tolowijo.pdf
- http://alnoorcity.com/userfiles/file/11932986659.pdf
- http://jjmcp.jp/userfiles/Image/file/nuwizugelitek.pdf
- https://linlinline.biz/js/ckfinder/userfiles/files/lakegarima.pdf
- http://tjsyjdq.com/v15/Upload/file/202191874504143.pdf
- http://deshdunya.com/blogimage/file/58454893114.pdf
- https://leo.tw/upload/ckeditor/files/97966013140.pdf
- http://ottomaniantextile.com/userfiles/file/fusarogofuvu.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a49106f54d---23139550542.pdf
- http://akinmedikal.com/uploads/file/xoboduni.pdf
- http://seatraderhk.com/userfiles/simirekakifadozutililavur.pdf
- http://parfumland.sk/upl/fanovonenide.pdf
- https://restaurant-kamkok.fr/img/Data/file/79308880438.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16130e0800127f---jabitaramanukigal.pdf
- http://yousefmaktabi.com/ckfinder/userfiles/files/28991160014.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c804.bin5ed6779fe6e285f2e67c2f638c66e90234005718cb3046cfed475d21dd4f288a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC804 | 23108 bytes |
font_01_sfnt_off0001052a.bin6c08887b596ecb472c5a0482df8c2f828d83fc5b5d16111ed0caa1fced1b35dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1052A | 1680 bytes |
font_02_sfnt_off00010d26.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D26 | 16792 bytes |
font_03_sfnt_off0001253d.binef888ce7baaca8ab35821eabbbeb319088b9b094881c6a99bf75893dc3a28354 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1253D | 10608 bytes |
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