MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Static analysis revealed numerous embedded URLs, many pointing to compromised websites or disposable domains, indicating a link farm designed to redirect users to malicious content. The presence of multiple external URI heuristics and link farm indicators further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://ketchas.ru/uplcv?utm_term=stm8+flash+programming+manual+%28pm0051%29 PDF link annotation
- https://costabravas.com/uploads/localidades/files/jometebabugo.pdfIn PDF document text
- https://gkscam.com/userfiles/file/82599011649.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/76191955520.pdfIn PDF document text
- http://www.dr.schure.net/ckfinder/userfiles/files/gotagamo.pdfIn PDF document text
- http://kaithompson.com/userfiles/file/sunukawopuwuvas.pdfIn PDF document text
- http://smart-ventures.ch/upload/Editor_Images/files/10054122191.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/a31a4c1cd08ea3757bf2f688ab976fe6/50469650295.pdfIn PDF document text
- http://sacoorhealth.pt/site/upload/file/wuxijesozalusitepofon.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d37ad909de---90624152816.pdfIn PDF document text
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/e3n42djtkb2dkgfukii7l47d52/57768492604.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/3932c2c7f8667354adb761e4ffcee828/juporepinupirefarubofe.pdfIn PDF document text
- http://geoplan.su/userfiles/file/47292231153.pdfIn PDF document text
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/697651fad9ddebaab8679c4283091d9b/kesewanodudebewonasewejef.pdfIn PDF document text
- http://lungshingcentre.com/userfiles/dakuserifonow.pdfIn PDF document text
- http://ahchala.com/img/file/sojonulu.pdfIn PDF document text
- http://sns.hu/_user/file/18456886576.pdfIn PDF document text
- http://mispuntossaga.com/campannas/file/pakesufijabibubopafixupup.pdfIn PDF document text
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7833ceb3---wipipofudabaxukamidetari.pdfIn PDF document text
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/s7oa1qecmnl4ojmankhj2em6om/73594604109.pdfIn PDF document text
- http://budohurtsa.pl/userfiles/file/kifuroteful.pdfIn PDF document text
- http://vegman-kzn.com/ckfinder/userfiles/files/mijofubobopuv.pdfIn PDF document text
- http://pc75.net/upfiles/file/1621380600.pdfIn PDF document text
- http://solarexperten.ch/fckeditor/editor/images/file/durugus.pdfIn PDF document text
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/4bda52148707b9d9cb847ab0b7b65b36/48320599288.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_off0000cb4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB4D | 11520 bytes |
SHA-256: c8fabd1287b9ffe15129709291717271a34cc959d97bd19a3e9de265b7673647 |
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font_01_sfnt_off0000e683.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE683 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fe95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE95 | 17032 bytes |
SHA-256: a36351c00c15452c3059510f60f162f07143dfefbeaa0c16014b80b2eb18fbb3 |
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