MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised or disposable hosting sites, such as smidgel.ru and sea-cruise.ru. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings strongly suggests a phishing or malware distribution campaign leveraging these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://smidgel.ru/uplcv?utm_term=autotune+gratis+android PDF link annotation
- http://sea-cruise.ru/ckfinder/userfiles/files/sijaxukumopafat.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16138906485801---82550260823.pdfIn PDF document text
- http://quick-thailand.com/images/uploads/file/3493186976.pdfIn PDF document text
- https://brune-schmuckwerk.de/ckfinder/userfiles/files/64410951022.pdfIn PDF document text
- http://serenetour.com/image/upload/File/tenegor.pdfIn PDF document text
- http://faisaltowel.com/survey/userfiles/files/satojodofojesikag.pdfIn PDF document text
- http://chochosanencino.com/uploads/files/jutilezufugupafozot.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/v6ki54ev598cg163p3skhjrkh4/76719000133.pdfIn PDF document text
- https://chulintemple.house-well.com/CKEdit/upload/files/xixuwilevadi.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161331e5595991---93685527387.pdfIn PDF document text
- http://gzbaosui.com/uploadfile/files/fesapitegidekimi.pdfIn PDF document text
- http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/54551951.pdfIn PDF document text
- https://o-dance.com/upload/files/23299508332.pdfIn PDF document text
- http://iwort.de/userfiles/file/94657251168.pdfIn PDF document text
- http://www.rpv-drachten.nl/files/file/79587747821.pdfIn PDF document text
- https://kcss.hu/korosi/userfiles/file/67077958588.pdfIn PDF document text
- http://sakurahoaanhdao.com/webroot/img/files/57857366187.pdfIn PDF document text
- http://jurabos.nl/include/editor/file/2613936193.pdfIn PDF document text
- http://elcolono.net/userfiles/files/47554195506.pdfIn PDF document text
- http://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/redifojopamabenem.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_off0000d54e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD54E | 10460 bytes |
SHA-256: 0dddac31979f7e5f65853b369536b5e52f1023f836ff063e39d2cef92b6d1332 |
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font_01_sfnt_off0000ed03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED03 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010515.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10515 | 17640 bytes |
SHA-256: 7fe5b515f39b936b527bfe53aef216061ec353d9de50b711e209df13a081bcc2 |
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