MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories, presents a deceptive download button and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9957
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://smidgel.ru/uplcv?utm_term=perimeter+and+area+class+5+worksheets+pdf PDF link annotation
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608383840bcec---mituxizusunug.pdfIn PDF document text
- https://chatsystem.site/js/ckfinder/userfiles/files/28982223338.pdfIn PDF document text
- http://asupuro.com/upload/save_image/files/kuledugoximabi.pdfIn PDF document text
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c4fb06e589b---81007468588.pdfIn PDF document text
- https://acavacecio.it/userfiles/files/jiwenuba.pdfIn PDF document text
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/fedd95a3ec485f59a965346b04f20491/fizubelaxegisixisesara.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/5d28e987249ba84ce1d96ab6bee2bdac/mugodiziwo.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160838da2904fd---gapipevumevi.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fe9f0507d1b8c92d5f101ae99b2a53af/74236351781.pdfIn PDF document text
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b57119472b---75392472482.pdfIn PDF document text
- http://aylincinarli.com/fckfiles/file/xiwuverekakumupor.pdfIn PDF document text
- http://parkwaywest1974.com/clients/861606/File/sulokokegepaluputoruge.pdfIn PDF document text
- http://vasvaripalmuzeum.hu/upload/file/roborudol.pdfIn PDF document text
- https://holocaustresearch.pl/nowy/photo/file/58966736132.pdfIn PDF document text
- https://beldaoyun.com/calisma2/files/uploads/golerakakiraf.pdfIn PDF document text
- http://gojjang.com/uploads/files/67542819730.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160707409c2622---47057027082.pdfIn PDF document text
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/33438ae1806061ac2b877a2fdbae60cd/972583411.pdfIn PDF document text
- http://a2itsolutions.com/chop/multimedia/userfiles/file/wibidoziwotodekesedavig.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bb3e7827df---zumuv.pdfIn PDF document text
- http://luatsugiadinhviet.com/upload/ck/files/67409028870.pdfIn PDF document text
- https://www.q-jin.ne.jp/ckfinder/userfiles/files/mumutobanotasiki.pdfIn PDF document text
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/da3d0cfb76c59cc64218ee9ab455ad8f/22213450729.pdfIn PDF document text
- https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/81830625192.pdfIn PDF document text
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/e6due4df44k22dthbt1tseilv3/tarekamerujilanizafited.pdfIn PDF document text
- https://standsimulator.com/ckfinder/userfiles/files/32250630443.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ef5b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF5B | 11196 bytes |
SHA-256: ae4096668af7e838878a48561105ad2e3e5f9d29ca05ca3c544f7f8775c37912 |
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font_01_sfnt_off00010974.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10974 | 17580 bytes |
SHA-256: 5f60e0879708bdedb063355fd07df814944630925f82c2ce050bf3639f68dc18 |
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font_02_sfnt_off00013761.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13761 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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