MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, forming a link farm. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are designed to phish or deliver further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://queure.ru/uplcv?utm_term=physical+education+question+of+the+day
- http://dh-life.com/ckfinder/userfiles/files/56492102226.pdf
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7d4915a74---gapeketejelu.pdf
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/4f994d16dfb9381fdb99777bd310a017/bulobidavidu.pdf
- https://hizlipin.com/calisma2/files/uploads/990740494.pdf
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16086e75015bd8---doziteva.pdf
- http://dainichiji.com/upload_ckr/files/77635249478.pdf
- http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/zawunuverijanilesilul.pdf
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/t00ab9lr9ha3brqket8m2p6od5/15440935968.pdf
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/479f8091390a2836dd4c3dc5f84ae83e/jezewesomabutefigu.pdf
- https://bataretak.com/img/files/file/xefodal.pdf
- http://abwnickersonplaza.com/uploads/files/19580589468.pdf
- http://gruppocinofilomarsalese.com/userfiles/files/lexotunevo.pdf
- http://szakkepzosiklos.hu/upload/file/40067239955.pdf
- http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/99418248265.pdf
- http://epoxidice.ro/mm/file/71142721305.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc79386e94---turukemibikaxi.pdf
- https://magyar-logyogyasz.hu/fileok/file/tixevuzejokuzitumavalur.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608400ba976d4---dezusobev.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac60c33e401---nowov.pdf
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a202d5989---56330664400.pdf
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/gt91ovntja1a1qim0aj2kbc3a5/66610137715.pdf
- http://aloeverajuice.cz/files/file/3921896033.pdf
- http://www.sealjet.mn/pictures/files/30169125251.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_off0000d51c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD51C | 16792 bytes |
font_01_sfnt_off0000ed33.binaca868887530ea66dd7328a8c25ed45fb68cba9bc7dceb1debd372aa0b4b0085 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED33 | 10836 bytes |
font_02_sfnt_off000105f7.bin5abb857c07158015e832a3616269187ecae3e70d21d810f3a32e066882a845f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105F7 | 16976 bytes |
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