MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external links, including one identified as an algorithmically-generated URL, which are strong indicators of malicious intent. The ClamAV detection and ML classifier further support this assessment. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from one of the provided URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 http://locthanhroyal.com/upload/files/vilapuvabibux.pdf In PDF document text
- http://giovanninociti.com/userfiles/files/40957632519.pdfIn PDF document text
- http://idcla.net/upload/files/6056138048.pdfIn PDF document text
- http://hcbarrett.com/user_area/file/8713092854.pdfIn PDF document text
- https://hondaotohaiphong.vn/upload/files/fesakurinifufuzetagim.pdfIn PDF document text
- https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/oilv3qthqlgta5s30nsrppbuj1/xenosifepirusomum.pdfIn PDF document text
- https://svltv.in/userfiles/files/pivavoxafofu.pdfIn PDF document text
- https://www.pu-sk.com/app/templates/js/ckfinder/userfiles/files/nukaleziwaleledi.pdfIn PDF document text
- http://nenayu.com/filespath/files/20210901063647.pdfIn PDF document text
- http://decentlogistics.pk/survey/userfiles/files/54564292106.pdfIn PDF document text
- http://heathrowairporttaxi.website/userfiles/file/gigukanajibu.pdfIn PDF document text
- http://poorclarescork.ie/images/45909540627.pdfIn PDF document text
- https://happy-playground.gr/uploads/_uploads/files/90268147632.pdfIn PDF document text
- http://bhk-aindling.de/userfiles/files/67470088927.pdfIn PDF document text
- http://dabaizhongxue.com/upload_fck/file/2021-9-8/20210908175302676653.pdfIn PDF document text
- http://seychelles-resort.com/images/blog/file/3447944318.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16137518fc7459---dadog.pdfIn PDF document text
- http://clinicaveterinariacittadivignola.com/userfiles/files/sekagojafomerad.pdfIn PDF document text
- https://khachsan295doson.vn/namthuan/images/news/files/48096559234.pdfIn PDF document text
- http://flex-link.cn/uploadfiles/files/80866919384.pdfIn PDF document text
- http://parvazyab.net/basefile/api203/files/59802040051.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=what+my+android+versionPDF link annotation
- 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_off0000ef2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF2A | 10640 bytes |
SHA-256: 2379a10793d3fca7459736204dda5bcdb3cdf3d7bf97bd3892ed95c1a6a375c7 |
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font_01_sfnt_off0001075e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1075E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011f70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F70 | 17536 bytes |
SHA-256: 45a4d84b451f1e99d09dbe036362d7eb91168bac7921842ce2793ef8f4b1cf00 |
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