MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://dienhoanghean.com/upload/ck/files/xikanovivu.pdf In PDF document text
- https://damsindia.org/admin/uploads/file/74192193763.pdfIn PDF document text
- https://khmernative-rice.com/userfiles/file/68544502204.pdfIn PDF document text
- https://mttrasportisrl.it/dati/upload/file/13835550431.pdfIn PDF document text
- http://artin-intranet.com/ckupload/files/79463693469.pdfIn PDF document text
- http://lutechmed.com/Images_upload/files/55203685547.pdfIn PDF document text
- https://pisangmanis.com/contents/files/zatafomivokut.pdfIn PDF document text
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec0d080dd2---30914471830.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613878731df0f---70923691816.pdfIn PDF document text
- http://rhondachem.com/d/files/lipodeligulebusov.pdfIn PDF document text
- https://siemreaptraveltours.com/userfiles/file/61012261784.pdfIn PDF document text
- http://www.findvoters.com/userfiles/file/rigoduvot.pdfIn PDF document text
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/1ecc64d14c1e646071131080e216bb8b/53475041525.pdfIn PDF document text
- https://facades-et-traditions.com/actualites/file/7818177618.pdfIn PDF document text
- http://pengyou-english.com/FileData/ckfinder/files/20210910_2D8F90E84A2B7098.pdfIn PDF document text
- http://okmarin.ru/userfiles/file/9170803788.pdfIn PDF document text
- http://verkaufs-akademie.com/userfiles/file/pedunusotez.pdfIn PDF document text
- http://schule.havonix.com/ckfinder/userfiles/files/sukuvon.pdfIn PDF document text
- http://originalavto.ru/userfiles/file/58774003187.pdfIn PDF document text
- http://vino-charlie.cz/userfiles/file/nabezo.pdfIn PDF document text
- http://bluecars.pl/userfiles/file/75554874589.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/suvezipisurewuju.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=wwe+2k19+mobile+apk+no+verificationPDF 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_off0000dc27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC27 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f43e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF43E | 11192 bytes |
SHA-256: b29d19a5aea8b6427f500b7e53f755efe39a423511dbd45587fade1c4cef01d1 |
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font_02_sfnt_off00010e62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E62 | 17516 bytes |
SHA-256: 5df05fb9b02dd7fd339ecd75b212de78f3a387f4ac24ffc2622612e81e19d6fb |
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