MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to various PDF files hosted on potentially compromised websites, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
Heuristics 6
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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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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://thietbivesinhanhhuy.com/asset/files/jawakibuneforazosug.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161313388c4e1a---sisamokutogisazikobadu.pdf
- http://nabisori.com/userfiles/file/17634900587.pdf
- https://www.autopsrus.com/ckfinder/userfiles/files/buxokoxusesav.pdf
- https://www.larche-de-jules.fr/ckfinder/userfiles/files/pigeke.pdf
- https://alate.org/admin/fckeditor/editorfile/jaxazisivexinodulodapipi.pdf
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/61e3396605c272bd320dbe927e7720d0/vafipupugunanurisobugafam.pdf
- http://www.ezmoving.com/file/goxebefozupozibomi.pdf
- http://ramenhajimetustin.com/uploads/files/4883007999.pdf
- https://vsetinrally.cz/userfiles/file/53191394462.pdf
- https://marathonlaval.com/userfiles/files/47988212419.pdf
- http://qhzs88.com/admin/fckeditor_upfiles/file/2021090412220080554.pdf
- https://aep-tc.com/cache/fck_files/file/46810159393.pdf
- https://maintogelonline2.org/contents/files/goretaso.pdf
- http://teraval.cz/res/file/73813440297.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612f533e9087f---napaju.pdf
- http://finemetal-cn.com/upload/files/wuralokolasipedivokiwozum.pdf
- http://khodahoanglang.com/admin/webroot/upload/image/files/pejataborizokawazurolutan.pdf
- https://ktmcollege.org/public_html/userfiles/file/zajezomamojo.pdf
- http://mwbright.com/upload_fck/file/2021-9-17/20210917055259344319.pdf
- https://vegas-shop.net/uploads/files/45636644926.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=not+receiving+text+messages+on+android+from+iphone
- 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_off0000b8c4.bin3b74f4ef5907099fd2b21bc654aa06aff0035f714f26e2257899562948e40eaf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8C4 | 11168 bytes |
font_01_sfnt_off0000d28a.bin0de20c792c7cee0142eee1849cbecc7492df91b66476032f6425ee00fe8b3620 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD28A | 16636 bytes |
font_02_sfnt_off0000fd1a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD1A | 16792 bytes |
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