MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of links, many of which point to compromised WordPress sites acting as hosting for other PDF files. This pattern is indicative of a link farm used to distribute malicious content or conduct phishing attacks. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7fc8452de---nuneluxusogoxe.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffebd322a1---fepujarerirebewib.pdf
- http://altinay-law.com/images/file/21833186242.pdf
- http://a-swiss.com/upload/userfiles/file/tovufemoravinotupo.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b71409f039e---vafapuwurafafujekoluravut.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/260accfc1b1801f946c7bd69a0b4aa3a/datozewawaza.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/3hs3pul4ls4ds7rbt6k10vvdf0/57206049959.pdf
- http://prvugkh.ru/uploads/files/dezizu.pdf
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/686db30588ba97e15133338469bd93fb/66313734327.pdf
- https://artbynela.com/uploads/file/36404412880.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/9f043dd24f6ac3d9e763dd23330f66b5/duxexadexawowikelosibus.pdf
- https://schmitz.cz/res/file/kubutotozipo.pdf
- http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16091576955f48---zujafifi.pdf
- https://daiichigroup.net/uploads/news_file/riwogo.pdf
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/hbfplmh0c43vbisq9f3cav0elr/63723116084.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/7c9485d5dbc67588d0099525d7cb51de/botuzisuke.pdf
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc74467cbc7---22743421337.pdf
- http://labonguyenhoang.com/img-chamthi/files/92444302795.pdf
- http://kstarsmall.net/userfiles/file///45734218984.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc3525c5a8---rarunisaroked.pdf
- https://fullhousetourism.com/UploadFiles/file/20210521214336112.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098dce063ece---buzixesa.pdf
- http://fotossc.pl/_files/file/45766539229.pdf
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/82851185a642b7eb612e776104dc10ce/lupati.pdf
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/5917a00a697e2403b7612c7a749515b9/85636314919.pdf
- http://www.thaiboat.net/image/upload/File/katakuxaxobitaluxamewexef.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=eat+your+frogs+in+the+morning
- 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_off0000d539.bincb6d52551f40f7a5289e8c47a83f85fcc476a60c01aff28ba9b6e3dc4b5685aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD539 | 10812 bytes |
font_01_sfnt_off0000edff.binc54abcc708015f0d69526b578e5dfd6e08c28c97ad38bfc988bdf4648fa8a555 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDFF | 16280 bytes |
font_02_sfnt_off00011801.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11801 | 16792 bytes |
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