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. Heuristics identified the document as a link farm, with numerous URLs pointing to compromised CMS upload directories and disposable hosting. These links likely serve as a distribution point for further malicious content or phishing attempts.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 http://china-spec.ru/userfiles/file/61753384943.pdf In PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141f3ce93d2c---jurefaziwuwatipesisowi.pdfIn PDF document text
- https://emenu.hu/editor_up/wewumegubusu.pdfIn PDF document text
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/87dd6384c5b0bb9bf12558a4cf8833a7/11389873678.pdfIn PDF document text
- http://minhquoc.vn/ckfinder/userfiles/files/fujenokelijetegobuv.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/64923522736.pdfIn PDF document text
- https://learnrkbin.jugalbandiresearch.com/ckfinder/userfiles/files/76770661085.pdfIn PDF document text
- https://confidence-ist.com/ckfinder/userfiles/files/jebirojosobibubexaberej.pdfIn PDF document text
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4722b53e4---6896598839.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/71327168212.pdfIn PDF document text
- https://spa-salon.ru/ckfinder/userfiles/files/52602361891.pdfIn PDF document text
- http://sochi-vitrazhi.ru/ckfinder/userfiles/files/samefixoro.pdfIn PDF document text
- http://circolonauticofavignana.it/userfiles/files/kudurugesubirubumimabo.pdfIn PDF document text
- http://printrun.nl/userfiles/files/xamadefovuwamopusiler.pdfIn PDF document text
- http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89811641143.pdfIn PDF document text
- http://tobolsk.fluentrussia.ru/img/content/files/41025415514.pdfIn PDF document text
- http://wuyioutdoor.com/userfiles/file/nejozapijiguxikasoxo.pdfIn PDF document text
- http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/novaruxanem.pdfIn PDF document text
- http://cosyromania.com/media/file/zevabitipipuse.pdfIn PDF document text
- http://aylincinarli.com/fckfiles/file/dizipikexelabololadazojaw.pdfIn PDF document text
- https://srccaa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/zuzumuzivej.pdfIn PDF document text
- http://ambvet-trefontane.eu/userfiles/files/lupupogibo.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/zumasowasilubisajizew.pdfIn PDF document text
- https://rubenoferro.com/userfiles/file/1524500652.pdfIn PDF document text
- http://emaaravm.net/upload/files/logiramupube.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/BcFPVxLj4jw/uplcv?utm_term=simcity+buildit+cheats+2020+iosPDF link annotation
- 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_off0000bf70.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF70 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d782.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD782 | 17396 bytes |
SHA-256: 938397bc78e035552604ce75316e37e7a8d585290a13c0cf6f0f3bbd91bd9d6a |
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font_02_sfnt_off00010454.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10454 | 11100 bytes |
SHA-256: 853a25309cc08e33abb4a86ba21c9325455745e0b2b6a73de97ad34998ec9551 |
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