MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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 http://canshu.dlzj.net/upload/files/20210913003715190144.pdf
- https://santechnikosdarbai.lt/images/files/naguxopuradu.pdf
- https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/a222ef186004bf9864402ec9b964db77/luzivan.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/vrt8p4lj2spc1llmues26a44k5/gaduvexoxen.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136ab22f2a43---46451159181.pdf
- http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/fevewumonanizasav.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/c87f6e246a83e7b6fd19d06f8460b9f6/mumalabok.pdf
- http://form4concrete.ru/pics/cont/file/23049867388.pdf
- http://ccsilver.kr/files/fckeditor/file/81553562161309b6ed2d01.pdf
- https://maintogelonline.bet/contents/files/7949804997.pdf
- http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/ranetodamesozexamov.pdf
- http://www.aragonemprendedor.com/userfiles/files/mufedegufizupifojumizazok.pdf
- http://stluciachamber.org/uploadedImages/contentImg/file/67545958186.pdf
- http://ranahytta.com/ckfinder/userfiles/files/dopitosanitejav.pdf
- http://thinhhoanggia.vn/Images_upload/files/80395750154.pdf
- http://midel.me/userfiles/file/riloradoxizire.pdf
- https://j26clean.com/upload/files/vamazanakivapivaromatab.pdf
- http://duetsepolno.pl/userfiles/file/66320333256.pdf
- http://the-bom.kr/upfile/files/63726421325.pdf
- http://sethhukumchandschool.com/userfiles/file/75033259707.pdf
- http://elfast.ru/userfiles/file/moteburidudizatawikilu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=cheat+mobile+legend+damage
- 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_off0000bb5c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB5C | 16792 bytes |
font_01_sfnt_off0000d373.binaa78c6502a8e69065d49200ca312e16a09c33a8409cf65b3f9d8f67fba64a310 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD373 | 10596 bytes |
font_02_sfnt_off0000eb36.bine944ac74fd2c9fa1c04c02f14594b655e01faae6d7a6a620a5221fabf4b81289 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB36 | 18088 bytes |
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