MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to link farms hosted on compromised or disposable domains. Heuristics indicate a link farm pattern designed to redirect users, and ClamAV detection confirms this PDF is classified as a phishing trojan. The ML classifier also strongly flagged this sample as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://irlanc.ru/uplcv?utm_term=como+tener+dos+sistemas+operativos+en+android PDF link annotation
- https://stpm-sa.com/userfiles/file/38972962136.pdfIn PDF document text
- http://wingmanresearch.com/userfiles/files/xuvagejajagubowol.pdfIn PDF document text
- http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613ebf1fe011e---28669983186.pdfIn PDF document text
- http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/31825738805.pdfIn PDF document text
- http://pvvc.cz/files/16217821067.pdfIn PDF document text
- https://queensflower.nl/clientfiles/85902074422.pdfIn PDF document text
- https://mjrspot.com/fckimages/file/42767510409.pdfIn PDF document text
- http://mgrima.com/files/file/68068507636.pdfIn PDF document text
- https://hockeymro.ca/docs/file/jowufibotemaluduvutulu.pdfIn PDF document text
- http://nhatngungoisaoxanh.com/upload/files/vejotudadutukonawoxaxo.pdfIn PDF document text
- http://thebeautyofdesign.nl/ckfinder/userfiles/files/21584607691.pdfIn PDF document text
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613af8e971d9f---soxolimej.pdfIn PDF document text
- http://bebsulmare.com/userfiles/files/31542987781.pdfIn PDF document text
- http://geodeslaboratori.eu/userfiles/files/fifiwemewuxoselegisir.pdfIn PDF document text
- http://dglytbt.com/upfolder/e/files/20210914075337.pdfIn PDF document text
- http://unsersohn.com/images/file/93443985354.pdfIn PDF document text
- http://tajesink.com/Uploadfiles/files/pejewobovixativovi.pdfIn PDF document text
- https://rkdestate.com/userfiles/file/42900180035.pdfIn PDF document text
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161387d9ce2cf1---sujodorinexerorubugiv.pdfIn PDF document text
- https://csodamalom.hu/files/files/pudotipe.pdfIn PDF document text
- http://cmtoolsrental.com/user_img/files/rikegorewi.pdfIn PDF document text
- https://sagarexpress.com/userfiles/file/13304344621.pdfIn PDF document text
- http://ladyvenus.it/userfiles/files/36968876963.pdfIn PDF document text
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/7397ba74c8775f17bf4a0536d9fc2ad9/9155594898.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_off0000ee73.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE73 | 10604 bytes |
SHA-256: 81223e0e64c9cbee4169d5e497da03aa8132ff43a072250d75ba890f1eab83e4 |
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font_01_sfnt_off000106b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106B5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011ec7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EC7 | 19596 bytes |
SHA-256: 9d16fda6494d7781ab3ab2c89c98741ae1295a9cca2010e5b8c09f515f1b6d51 |
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