MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm pointing to compromised WordPress uploads and disposable hosting. The embedded JavaScript likely facilitates the redirection to malicious URLs, contributing to a phishing or malware distribution scheme. The numerous unknown URLs suggest a broad attempt to host malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161352ef227e34---nobezo.pdf
- https://tunhuaduytan.com/upload/userfiles/files/42904498310.pdf
- http://klm-co.ru/foto/ck/files/rosipizaxixolonolevolu.pdf
- http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/45167971094.pdf
- https://stancijanegrin.com/UserFiles/files/tolus.pdf
- https://zzhqhi.com/d/files/37442404796.pdf
- http://pinzimoniofiumicino.eu/userfiles/files/fonezivegikamidibubadex.pdf
- http://dieutrimun.myphamkangnam.vn/webroot/img/files/murexewerugesika.pdf
- http://babijie.com/upload_fck/file/2021-9-6/20210906072150396720.pdf
- https://qualitygums.com/userfiles/file/79260736711.pdf
- http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/zexeke.pdf
- http://madonnina.info/userfiles/files/moteluzepo.pdf
- http://hadt.vn/upload/files/92467793978.pdf
- https://taichielite.com/louis/taichi/ckfinder/userfiles/files/16765846682.pdf
- http://myxroad.net/upload/userfiles/file///galotenizirironup.pdf
- https://hobbes-group.com/upload/files/sebovoz.pdf
- https://stormester.no/files/file/pejuwoxosuvuxinuxolade.pdf
- https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/9fe5bbcc942704d1e72c3ecdd7b0c242/36776902173.pdf
- https://manorhair.com/uploads/files/202109031329557137.pdf
- http://rwdwebwebdesign.com/img-aim/files/74090523476.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/cf8e0c2bqo19dg0fv14jb75aq2/62965960126.pdf
- https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/3701449877.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+do+i+get+a+video+as+my+lock+screen
- 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_off00010af5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AF5 | 16792 bytes |
font_01_sfnt_off0001230c.bin0bc4674ad50fcfab2539d0c2d2c259ee1ce35eec109b78b90f09090cd85b31e7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1230C | 11064 bytes |
font_02_sfnt_off00013ca4.bind90fc909f10e32194f283b425a4a8f83e7516ba0f449604869c7a91b3e588733 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CA4 | 17512 bytes |
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