MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. Heuristics indicate the document functions as a link farm, directing users to multiple external websites, some of which are hosted on potentially compromised or disposable domains. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://hk888.edo2008.com/com/comimg/file/20210909_005626_167.pdf
- http://espwireless.net/uploads/file/53289664486.pdf
- http://artc-polymers.com/upload/images/files/juwawad.pdf
- https://alakharia.com/public_html/userfiles/file/67612796736.pdf
- https://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/2554652575.pdf
- http://harmonie-avion.fr/actualite/files/80425805954.pdf
- http://airmon.hu/images/files/89424015094.pdf
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/f9pl8p0ajqtnc3sha8mrbclu6l/82566021728.pdf
- https://ymvii.com/admin/upload/files/83550905345.pdf
- http://poiskvod.ru/images/file/35297153615.pdf
- https://swapnauraan.com/ckfinder/userfiles/files/10768870886.pdf
- http://kfnmsz.com/upfolder/e/files/20210913101327.pdf
- https://atasuorganiktarim.com/upload/ckfinder/files/46263333489.pdf
- http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/vurizuvakefetewagetut.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7cf33a635---48771863583.pdf
- https://stpatswatertown.org/ckfinder/userfiles/files/sukoximalezefawem.pdf
- http://soundspace.eu/Upload/file/woretefegar.pdf
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b039251b5d---52487136313.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/e48cab137d9c959e81cf247cdac2895f/40759533014.pdf
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/850522536613003498543b.pdf
- https://verredistri.fr/xmedia/file/runojuwubaf.pdf
- https://mclandpin.com/calisma2/files/uploads/kuvovomudulapaduzulenabep.pdf
- https://esperanzadeavila.com/fotos/file/44562813097.pdf
- http://27derajat.com/assets/ckfinder/core/connector/php/uploads/files/kuganoxitibi.pdf
- http://interroadholland.nl/userfiles/file/xumibikomakevun.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=imprimir+en+impresora+hp+desde+android
- 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_off0000f49c.binf29ea7b25fb6b30888aea17644e9bd0408840406ddee0e59655c3b89d911a0c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF49C | 10464 bytes |
font_01_sfnt_off00010c13.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C13 | 16792 bytes |
font_02_sfnt_off00012425.bin5858877d668fb9d6e4d3ef397971e2128e557572ea8f6d02ba660680c0acc466 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12425 | 21104 bytes |
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