MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. It also contains numerous external URIs pointing to various websites, many of which appear to be compromised or disposable hosting, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://laborke.ru/uplcv?utm_term=data+flow+diagram+notations+pdf
- https://karapinarinsaat.net/userfiles/upload/file/97760114016.pdf
- http://adabaskimerkezi.com/upload/file/jaremomezejugegajuv.pdf
- https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/13fbc9b08d32ebe3855cff84a6145e0c/44201565768.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb876d03d07---masoludawaxelobofaj.pdf
- http://titibbs.xyz/js/ckfinder/userfiles/files/mikopazupe.pdf
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825108b6753---fojukulos.pdf
- http://goteneplast.se/files/images/file/mufuxinuxisorig.pdf
- http://vncdata.net/app/webroot/uploads/files/41310452013.pdf
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/3f15af6e275533c4f7eee9becf8afcef/fosomojufa.pdf
- http://inarchengineering.it/userfiles/files/kajuwidilebaxowewan.pdf
- http://charontrade.hu/data/file/69822827579.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/031db0e9ed95cef9e5f1a262643b0907/xugupapukuder.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/2rvnjoa7ie73ontgnb3bl6r19p/kulutebemusoget.pdf
- https://arhstroi.by/uploads/files/pijaxedawajanaxenoveja.pdf
- http://numismatika-nbkpdy.cz/userfiles/file/folisazeterolosugunuf.pdf
- https://prestinireedcorp.com/userfiles/files/temulix.pdf
- http://oipipleszno.pl/userfiles/file/19496592579.pdf
- http://weddingdiy.cc/uploadfiles/files/20210703_105424_8133.pdf
- http://yuhongzg.com/d/files/2215560500.pdf
- http://architettobotteonpierpaolostudioabacus.it/userfiles/files/95120963019.pdf
- http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160d7804fb5243---febofomijavegidezimuka.pdf
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160d23138b4e5b---3103002435.pdf
- https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/f0f79e62f725be801c684804253a737a/tidesigutiwisemo.pdf
- http://woodwork.pl/ubezpiecz/obrazy/file/94439357508.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_off0000d603.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD603 | 16792 bytes |
font_01_sfnt_off0000ee15.bin616e5080399bf9d92a5c6bd8ec2b8e584c393e6cf753fc0a66e233a1505900cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE15 | 18120 bytes |
font_02_sfnt_off00011c69.binb5a9ff8353098ea5fed359cc89f46a230c8b4b92fb3758011f23e18d3efadd7c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C69 | 10796 bytes |
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