MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, likely to distribute further malicious content or for SEO manipulation. The ML classifier strongly suggests malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://irlanc.ru/uplcv?utm_term=person+drawing+guide PDF link annotation
- http://naturalwonders.com/uploads/files/82331406974.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/186e4c4ac7e0d926bef4ebc6d98e8583/kujivateme.pdfIn PDF document text
- http://mesterteto.hu/userfiles/file/59298163394.pdfIn PDF document text
- https://samavetpharm.com/userfiles/files/xatemawinirisure.pdfIn PDF document text
- https://bela.geekers.tw/upload/file_folder/file/59035540242.pdfIn PDF document text
- http://kapfenberger-schuetzenverein.at/userfiles/file/warafegulitivigebidu.pdfIn PDF document text
- https://hfbee.tw/upload/ckfinder_temp/files/20210905054326.pdfIn PDF document text
- https://www.borzabadi.com/ckfinder/userfiles/files/74266004590.pdfIn PDF document text
- http://marchmont.ru/imgs/file/nuvewurafujumiras.pdfIn PDF document text
- https://thietkeweblongan.com/upload/files/xobabobopitifazeweniw.pdfIn PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/6b127ce60544993d6e1bd4108f764c72/limeviguxupasamiju.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16155fe7bcea2f---vubidava.pdfIn PDF document text
- http://oishisushigd.com/uploads/files/wadojipukasofegezef.pdfIn PDF document text
- http://conblocmanado.com/pics/file/meladigerevogibusokunok.pdfIn PDF document text
- http://status.cz/UserFiles/File/welasax.pdfIn PDF document text
- http://falconartistmanagement.com/ckfinder/userfiles/files/vakekezonege.pdfIn PDF document text
- http://dieukhactransam.com/uploads/files/72521614662.pdfIn PDF document text
- http://turnyras.lt/Files/file/gizeguzoxezazomet.pdfIn PDF document text
- https://magazinul-de-instalatii-sanitare.ro/app/webroot/files/userfiles/files/78244326314.pdfIn PDF document text
- https://empezo.xyz/js/ckfinder/userfiles/files/pukigejewi.pdfIn PDF document text
- http://sivam.pl/files/file/gimexogepuk.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1614df86fb6920---fipegiwuxuj.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_off0000af9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF9C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c7b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7B3 | 10468 bytes |
SHA-256: c5ef89b0a1ece45fdbd06e43f48ca6b52cbda02d754b116e3ca2a2a1ae614029 |
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font_02_sfnt_off0000df70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF70 | 15024 bytes |
SHA-256: 016b117a60a41fd1600665de7f0c0845ebbc3190609dcee9ec9f0640221cb86e |
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