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 Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs that point to compromised WordPress upload storage and other disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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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 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://laborke.ru/uplcv?utm_term=premam+malayalam+mp3+download PDF link annotation
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/161338e4488040---juxam.pdfIn PDF document text
- https://dmitrovka-zn.ru/admin/ckfinder/userfiles/files/mokewuwidedokosazova.pdfIn PDF document text
- https://olympicwroclaw.pl/zdjecia/fck/file/piratudikegolu.pdfIn PDF document text
- http://simonkuehner.de/gfx/userfiles/files/xobaneregoxoxobejufobo.pdfIn PDF document text
- http://zatuchlina.cz/upload/file/sasulanisolile.pdfIn PDF document text
- http://lasfyy.com/uploadfile/file/20210913194251741.pdfIn PDF document text
- https://rendszergazda-cegeknek.hu/ckfinder/userfiles/files/givabelabavowuko.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131146259d2e---luxirusufaxobetej.pdfIn PDF document text
- http://nsfeed.com/_UploadFile/Images/file/64826591494.pdfIn PDF document text
- http://aroma-es.red/yamituki-n/uploads/files/zuzuxilesarapinu.pdfIn PDF document text
- https://zagorjeadventureteam.hr/files/jadixetadijafobomesuz.pdfIn PDF document text
- http://hotdeals24x7.com/ci/userfiles/files/gelezorixuwab.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16132570b3d129---48576578624.pdfIn PDF document text
- http://ahrestygz.com/userfiles/files/20210901_060259.pdfIn PDF document text
- http://aktien-analyse.de/images/File/2680745176.pdfIn PDF document text
- http://www.offshoreyachts.net/web_upload/editor/files/72448404647.pdfIn PDF document text
- https://hmanagement.net/userfiles/file/93595948881.pdfIn PDF document text
- https://inprovitperu.com/ckfinder/userfiles/files/9925398817.pdfIn PDF document text
- https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/98324410661.pdfIn PDF document text
- http://7166867.ru/ckfinder/userfiles/files/34852569907.pdfIn PDF document text
- http://wdnederland.nl/file/64122026975.pdfIn PDF document text
- https://nhomphuongnam.com/upload/files/kefugowufi.pdfIn PDF document text
- http://immobilier-valence-agen.com/userfiles/file/53275253881.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_off0000c4c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4C1 | 17564 bytes |
SHA-256: 429aa204505032e7413a2ac809b7be67b2c3b98d1f0f9b9d55a8977ee1c14003 |
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font_01_sfnt_off0000f220.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF220 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A37 | 10568 bytes |
SHA-256: 54e7aabed3102c35ab9b9a9468783a5d34877f186d1af8a6eefe12e2663e058b |
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