MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external websites, many of which are hosted on compromised WordPress installations or disposable domains. The presence of 'utm_term' parameters suggests an attempt to disguise the malicious links as legitimate search traffic, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9923
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://irlanc.ru/uplcv?utm_term=the+sanford+guide+to+antimicrobial+therapy+pdf+free
- https://ewdel.cz/ckfinder/userfiles/files/kudowudiniduwuxagawofijaj.pdf
- https://alihuata.com/userfiles/file/31558404952.pdf
- https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/afd408de006cf097156286b5663a9eea/13480508798.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610b1d5b6a009---xetipabovimofutiwa.pdf
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106367573580---tujofapevofeme.pdf
- http://fine-cottage.ru/userfiles/file/73777503985.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/b3optq0ccm9moojens1r224jl4/bofarafijep.pdf
- http://travellightnepal.com/userfiles/file/12586489683.pdf
- http://expertsystemgroup.com/file_media/file_image/file/zosexaragadederiretodo.pdf
- http://say-international.eu/userfiles/file/rukipativa.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985ab5009ff---79416802336.pdf
- https://livnica-metalurg.com/images/pages/file/vepuremituxexutafizexijux.pdf
- http://jtour.vn/userfiles/file/39850772703.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/sqte97nam9cfos6qqfbdhjrr22/zopugusebedoresuzusi.pdf
- http://massarentearchitettura.com/userfiles/files/86874332001.pdf
- https://copab.tn/216mag.svn/uploads/files/72150666210.pdf
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/k5i4o37bie3ihjmu8no7775j40/78647414922.pdf
- http://cn-polylysine.com/d/files/91714114219.pdf
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e85ef0ebc1---wuwuguzaludorivuzebenox.pdf
- http://www.superior-inkjet.com/login/ckfinder/userfiles/files/2528830815.pdf
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/6d76d8ff2656c0aa629820006c725748/3087030484.pdf
- http://www.chatanakonci.cz/userfiles/file/77801105071.pdf
- http://warehousetraining.ie/images/80638729806.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/651c6118da130b75170ee9554d5d610a/zatosexorubusul.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be1df068178---54518550863.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e854.bin7be665147c5cc498e66d0b2350687b3aa0a6088626a91c406e9618199ebe4e50 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE854 | 17424 bytes |
font_01_sfnt_off00011608.bin437fe6df1623d334f4c8e9df1b0204db268eea5a82e80baff2e16df0c464f5aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11608 | 11384 bytes |
font_02_sfnt_off00013046.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13046 | 16792 bytes |
font_03_sfnt_off00014857.binfcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14857 | 16144 bytes |
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