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. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution campaign, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://chcial.ru/uplcv?utm_term=critical+ops+mod+menu+ios PDF link annotation
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141b028469f8---dudiresamudumelut.pdfIn PDF document text
- http://ylpqzl.com/ckfinder/userfiles/files/fulene.pdfIn PDF document text
- https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/f8069f1b14d557cf8079bef5498d4eb8/30834319874.pdfIn PDF document text
- http://htygroup.com/upload/files/wavewuxasufaj.pdfIn PDF document text
- https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/33580243404.pdfIn PDF document text
- https://bela.geekers.tw/upload/file_folder/file/wixefavaviburixaxurov.pdfIn PDF document text
- http://xn--4k0b43gkwo4gn.com/upload/editor/file/bofej.pdfIn PDF document text
- https://nationalshield-uae.com/userfiles/files/rubixux.pdfIn PDF document text
- http://cabini.it/userfiles/files/22624144106.pdfIn PDF document text
- https://biodent.ro/m4fm_files/m4news/ck-uploads-files/96350777542.pdfIn PDF document text
- http://gordostcrista.ru/userfiles/file/zidiwixaroropomidomeli.pdfIn PDF document text
- https://eliteprotectiveservices.net/ckfinder/userfiles/files/pegidubuzadezekike.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/lvf5pt7eu1favhe4je36vpaneg/75877571167.pdfIn PDF document text
- https://bilegt.mn/userfiles/files/99668721088.pdfIn PDF document text
- http://railwaysrailroads.com/upload_files/files/difetaweludekavej.pdfIn PDF document text
- https://jsptti.com/ckeditor/ckfinder/userfiles/files/36361866138.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612eec71f3fcd---banodipod.pdfIn PDF document text
- http://www.mbk-montage.nl/ckfinder/userfiles/files/vegeleniwegile.pdfIn PDF document text
- https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/mosafopo.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614f6f93170a7---kajedefojafusatinunaja.pdfIn PDF document text
- http://greenbiotech.vn/uploads/userfiles/file/butejogodamajapomiki.pdfIn PDF document text
- http://noxsun.com/jingkelun/userfiles/files/20210924230817.pdfIn PDF document text
- http://backkwang.com/userData/board/file/93441165525.pdfIn PDF document text
- http://yuhuimachinery.com/d/files/mitulajaritiruvebagus.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_off0000b98a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB98A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d1a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1A1 | 10804 bytes |
SHA-256: b7cddc1e713d79c24963fdafbad51f6425cfd90cb3704616032fc7ddefbb78c1 |
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font_02_sfnt_off0000ea86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA86 | 17572 bytes |
SHA-256: fa4f4e4a06c5517439c5e37c7cb883fc9c4b65ae3f5939ff12ed19931cf714f4 |
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