MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate a 'link farm' pattern, suggesting the document's purpose is to direct users to external malicious content. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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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://archism.ru/uplcv?utm_term=excel+save+as+pdf+vba
- http://machin.kr/userData/board/file/fiwepoxawe.pdf
- http://abpjseah.news-read.com/upload/files/62089931280.pdf
- http://80tner.friend-match.com/upload/files/3928307190.pdf
- http://an-ocn.ru/ckfinder/userfiles/files/65291253566.pdf
- http://artgrafika.cz/userfiles/file/80181811557.pdf
- http://harlit.com/ckfinder/userfiles/files/20210917_121820.pdf
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137c318a3a59---2414968930.pdf
- http://wojno-stal.pl/pliki/file/49866668659.pdf
- http://moje-stranky.eu/userfiles/file/rogur.pdf
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/04d625a86b05b2bbfaf404b776b1e6b2/72154833111.pdf
- http://mega-gold.com/userfiles/files/32135884703.pdf
- http://esrafisek.com/images_upload/files/jidezenirikobitijek.pdf
- http://gymostrov.eu/gymostrov/userfiles/file/fodolegufetabagag.pdf
- http://thienlongadv.com/upload/files/18559543538.pdf
- http://jobcred.com/rk/jobcred/uploads/image/file/49219208432.pdf
- https://goacetours.com/ckfinder/userfiles/files/vobofusabogubinovat.pdf
- http://mintaialuminum.com/d/files/wujukokadusudemudowibe.pdf
- http://www.ags-sib.ru/ckfinder/userfiles/files/93106394777.pdf
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16141c0a580ea7---92941945335.pdf
- http://the100voicesofgospel.ch/fichiers/newsletter/file/vobakevegomonefulawas.pdf
- https://steklo-shik.ru/userfiles/file/vinuninimegoxuvefelo.pdf
- https://pernambucoimortal.com/imagens/files/34303462646.pdf
- http://fcvperu.org/data/fcvperu/userfiles/file/numabokatekoluger.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_off0000c82d.bin188016ff857d2686e8cad01cf75d8ce56619bf7250803218213391cda78748ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC82D | 17384 bytes |
font_01_sfnt_off0000f52f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF52F | 16792 bytes |
font_02_sfnt_off00010d46.bine598196126071433c93d8750df0b63705ca7063862fd1433bfc570500ba5e654 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D46 | 10392 bytes |
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