MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF contains embedded JavaScript and a significant number of external URIs, many of which point to disposable hosting or compromised CMS upload storage, indicating a link farm designed to redirect users. The embedded JavaScript likely facilitates the redirection or further malicious activity. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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 http://zimmerei-possert.at/51953688174.pdf
- http://huseyindurmuslar.com/images_upload/files/66126302767.pdf
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361986dc2dc---11277046141.pdf
- http://terrietanaka.com/library/files/70782178565.pdf
- http://basketaci.cz/UserFiles/File/solulojemopo.pdf
- http://nhatrangpalace.vn/app/webroot/upload/files/lukavuseniv.pdf
- https://elitstroycraft.ru/source/file/64713434675.pdf
- http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/8375081278.pdf
- https://birgatour.mn/js/ckfinder/userfiles/files/19007947603.pdf
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/161492dbf7cf18---36277293460.pdf
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135d10bb4bf3---tilopenekaposozotimelem.pdf
- https://pilot-nav.com/ckfinder/userfiles/files/22167994709.pdf
- http://giaydantuongphongkhach.net/images/news/file/wibipe.pdf
- https://designsdubaiukfashion.com/userfiles/file/mupadun.pdf
- http://sms-dk.com/FileData/ckfinder/files/20210905_6CD225FD417789DE.pdf
- https://sieuthigo.vn/upload/ck/files/21473576193.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140bac8864eb---pobetaxovelifuzowademaze.pdf
- https://booking-news.hkdnracing.com/webroot/editor-uploads/files/80743672710.pdf
- https://newsru.md/upload/userfiles/files/xoxinosudef.pdf
- https://snf.styleguides.ch/userfiles/files/24853441218.pdf
- http://mylodge-naoshima.com/41402209088.pdf
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e68a64bf6f---bozipulaf.pdf
- http://keemunblacktea.cn/uploads/file/050929168123.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=gta+sa+gta+v+skins
- 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_off0000f044.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF044 | 16792 bytes |
font_01_sfnt_off00010856.bin66b913b4b0571e55ed8db6800c972b85faddfa31134222bd25d5103c34ee41a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10856 | 17448 bytes |
font_02_sfnt_off0001353f.bin0af184a72d0bb3eb597eae6085e80c019fefb2c86d6ac5cb8d49ca50be1aa8fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1353F | 10080 bytes |
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