MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the PDF acts as a link farm, directing users to multiple external websites, some hosted on compromised CMS uploads. The presence of embedded URLs and the nature of the heuristics suggest this is likely a phishing or malware distribution lure, potentially delivered via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://huntic.ru/uplcv?utm_term=android+backup+application+data PDF link annotation
- http://hanboo.cn/Uploads/file/2021090501573370554.pdfIn PDF document text
- http://minisadik-margaritka.ru/admin/ckfinder/userfiles/files/jetiga.pdfIn PDF document text
- https://refakatci.net/userfiles/file/rijakaligu.pdfIn PDF document text
- http://www.pethouse.es/ckfinder/userfiles/files/letofokudeko.pdfIn PDF document text
- http://businessdevelopmentcenter.pl/uploads/userfiles/files/74216056455.pdfIn PDF document text
- https://millvalley.com/wysiwygfiles/file/42224584450.pdfIn PDF document text
- http://fusen-es.info/yamituki-n/uploads/files/pekane.pdfIn PDF document text
- http://worldprint.su/userfiles/file/fuvarikojunupelagiwipumas.pdfIn PDF document text
- https://dcimx.com/files/46624444214.pdfIn PDF document text
- http://ascensionchina.com/userfiles/file/63257255657.pdfIn PDF document text
- http://urgentcarepb.com/userfiles/file/53985492683.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/6f22d91be99f68a812f72b8588d165ec/vegifetitimadexujunob.pdfIn PDF document text
- https://ibericadearmerias.com/file/57387605828.pdfIn PDF document text
- https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/7757202160.pdfIn PDF document text
- http://www.veslovani-vsb.cz/soubory/file/80016976385.pdfIn PDF document text
- http://maekuangudomthara.com/ckfinder/userfiles/files/67521205670.pdfIn PDF document text
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161410f23e4b8c---kinodalodaki.pdfIn PDF document text
- https://tavcam.com/upload/ckfinder/files/lewum.pdfIn PDF document text
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161351349a08ff---satulofutatuvowaf.pdfIn PDF document text
- http://aviatechinform.ru/sadm_files/gelaxoxajuxovemufepik.pdfIn PDF document text
- https://jamurgoreng.net/contents/files/39526234512.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/bdde8bf7f8b0550228c19c42b0967834/momorevebinejudako.pdfIn PDF document text
- http://veszpremlizards.hu/_user/file/rotugorigawozem.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_off0000d948.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD948 | 10520 bytes |
SHA-256: 05eeb79d6edd5567f3d523137183df8e1643082d88e66102c27325e849997efc |
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font_01_sfnt_off0000f119.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF119 | 16844 bytes |
SHA-256: 077cb9b8838429c001965234287852b85d037d5c5afa413289493ff4171cf682 |
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font_02_sfnt_off00011cd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CD0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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