MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt, aligning with the ClamAV detection of Pdf.Phishing.Trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://chcial.ru/uplcv?utm_term=nba+2k21+apk+mod
- http://dydlhx.com/upfiles/file///gilefanix.pdf
- http://vning.net/filespath/files/20210906204930.pdf
- http://iberia-ex.com/images/blog/file/28594525135.pdf
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/b7e95f2d4c626a84c7072e6b4812ff37/21434527949.pdf
- https://currenwatch.myhost360.cn/file/upload/files/09-07-13-46-53-40.pdf
- http://avanti.pl/userfiles/file/donagi.pdf
- http://twfindia.in/userfiles/files/natevoraxobazegutofube.pdf
- http://kmconlinecme.com/userfiles/file/76601265748.pdf
- http://pagyesa.org/userfiles/file/20210907142533.pdf
- https://niboparis.com/upload/fckeditor/file/1631456534_1.pdf
- http://doingthing.com/downloads/blog/geust/files/47229167316.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c5fab0443---57042406255.pdf
- http://xn--or3bi2da319p.com/upload/fckeditor/file/5036195744.pdf
- https://mallncart.com/userfiles/files/revuterunolu.pdf
- http://mamolenasnc.it/userfiles/files/xakubunelefab.pdf
- http://ayrh.internet-match.com/upload/files/fenowalokepavexutotezigub.pdf
- http://hoclaixebinhthuan.com/upload/contentFile/file/57338651754.pdf
- https://myclubowners.travelenvogue.com/userfiles/files/54731976250.pdf
- http://madurastones.com/userfiles/file/kerod.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140121c90abc---75368240728.pdf
- http://nhakhoasaigonkimcuong.com/uploads/images/files/panunamolaweme.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c997.bin7f8c719b1e0f40243fde87954b1783e93ec9d25358cc330b1041287d05569927 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC997 | 17620 bytes |
font_01_sfnt_off0000f7a9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7A9 | 16792 bytes |
font_02_sfnt_off00010fc0.bin14db52c019e6b85f26d87bff3e33c8bccb68027897802d0d45ee9a611650aa71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FC0 | 10196 bytes |
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