MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The document contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://chcial.ru/uplcv?utm_term=ott+navigator+apk PDF link annotation
- https://anitacalderon.com/ckfinder/userfiles/files/8405594848.pdfIn PDF document text
- https://ou-ravda.com/ckfinder/userfiles/files/wanakomupujifidov.pdfIn PDF document text
- http://ljjxmining.com/uploadfile/file///2021090119004324.pdfIn PDF document text
- http://nigerseedindia.com/uploads/purobadulusijexivuwulolip.pdfIn PDF document text
- https://shen-su.eu/gfx/userfiles/files/8869547484.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1613add5d6c299---memunojojute.pdfIn PDF document text
- http://vaithun.net/upload/files/48091849753.pdfIn PDF document text
- https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/jabop.pdfIn PDF document text
- http://surausa.com/uploads/files/25572933226.pdfIn PDF document text
- http://www.gitialiganjlko.org/ckfinder/userfiles/files/9260863918.pdfIn PDF document text
- https://wilocom.ro/ckfinder/userfiles/files/gukusilijim.pdfIn PDF document text
- http://halaljones.com/uploads/files/tajugipudo.pdfIn PDF document text
- http://alfavit.tv/userfiles/file/zipexo.pdfIn PDF document text
- https://mundolibre.cl/uploads/userfiles/files/miburokotelidaf.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1614052bd7a790---1999676125.pdfIn PDF document text
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161408f94298cf---vomegapiminepotazugi.pdfIn PDF document text
- https://kiaavcilar.com/upload/ckfinder/files/kajaxirexujojalon.pdfIn PDF document text
- http://nhakhoasaigonkimcuong.com/uploads/images/files/kusebokafakuzujabi.pdfIn PDF document text
- http://urdu-hadith.com/survey/userfiles/files/lowesita.pdfIn PDF document text
- http://form4concrete.ru/pics/cont/file/lejiv.pdfIn PDF document text
- http://jlm-kg.com/uploads/file/16304574210.pdfIn PDF document text
- http://corse.annuaire-regional.com/ckfinder/userfiles/files/gonifax.pdfIn PDF document text
- https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/scj932hjq063qg4pkeoo9uetvm/xilekufaboledakasugo.pdfIn PDF document text
- https://verner.lt/images/files/20041416812.pdfIn PDF document text
- http://xn--hh0b97d8is16e.com/userData/board/file/sivozomu.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_off0000c056.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC056 | 19588 bytes |
SHA-256: 763feb9021827b2129653ba0528c9a431b39b25548db949f9e973d25608f949b |
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font_01_sfnt_off0000f282.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF282 | 10264 bytes |
SHA-256: 881baf825a8d914ff006dbfaf21fef0aa7a6f2469f5f9990f625c11dc50ae2cf |
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font_02_sfnt_off000109c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109C6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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