MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document containing embedded JavaScript, which is a common technique for delivering malicious payloads. It includes numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 8
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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 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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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://khmernative-rice.com/userfiles/file/69791710880.pdf
- https://iieng.org/editor/ckfinder/userfiles/files/weleredurivef.pdf
- https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/64974308155.pdf
- https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/34925562059.pdf
- http://meuble-tunisie.com/userfiles/file/mukalunakevereboka.pdf
- http://diennuocdanang.com/uploads/image/files/7222053669.pdf
- http://osoboebludo.com/ckfinder/userfiles/files/gajar.pdf
- http://misterholidaysanprisco.it/userfiles/files/82022806538.pdf
- https://noithathoaphat11.com/upload/files/febevuborasiro.pdf
- http://marleenjansen.nl/images/uploadfiles/66819891366.pdf
- http://assessmentinsight.com/ckfinder/userfiles/files/41355582358.pdf
- https://ltes.tw-goods.com/UserFiles/files/59163810716.pdf
- http://ekhoron21.mn/uploads/files/dapozeradonokujuboj.pdf
- http://hotspot-usa.com/js/upload/files/segev.pdf
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/e7b25f92bc805ac0e83104b56c0a3cb6/tebegakubu.pdf
- http://imhome-listings.com/userfiles/files/bukunam.pdf
- https://trystsalonri.com/images/file/92599134601.pdf
- http://zubrcup.by/files/files/vapoduroxetipubeni.pdf
- https://reformedgeneration.com/userfiles/file/57248809776.pdf
- https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/0f8eb027b0f5e3492f5e1f42ae2347ea/22530113785.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614587d5432c9---2301361494.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=balloon+defence+6
- 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_off0000ad18.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD18 | 16792 bytes |
font_01_sfnt_off0000c52f.binc78635e3bc436b32f3646f433b88f929260182ecb83a0be2ec272203ade18370 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC52F | 10232 bytes |
font_02_sfnt_off0000dc48.bin189c5633c5fee988843c264c10f90c9a2ede0a0703a2d60bbe10cc3d2fa982a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC48 | 16104 bytes |
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