MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan PDF. It contains a large number of external links, many pointing to PDFs hosted on compromised WordPress sites and disposable domains, suggesting a link farm for SEO manipulation or payload distribution. No scripts were extracted, but the extensive link farm and the nature of the URLs strongly suggest a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://cafij.co.za/YmrXLWy8?keyword=linux%20full%20command%20list%20pdf%20downloads%20pdf%20files%202017
- http://hyswimpool.com/userfiles/ketigabuzaximorexafobis.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1626041f2a1b4a---31399232010.pdf
- http://daiichitelecom.com/uploads/news_file/65751694557.pdf
- https://ralifanexipoker.weebly.com/uploads/1/3/1/3/131380500/182e74bb1c66.pdf
- https://bezugoro.weebly.com/uploads/1/3/4/6/134697972/3a4a7fbaa079.pdf
- https://devoligoj.weebly.com/uploads/1/3/7/5/137509872/jisirin.pdf
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/162698b12243d5---60907835481.pdf
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/24eb21b88e5f2319c0d573143ba2d907/zavosebuxekidibesuji.pdf
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/b6d220e9844c0ca62441e5dda203e653/nubodaxarilikido.pdf
- https://bejidadona.weebly.com/uploads/1/3/0/9/130969139/gitulesosazetisiko.pdf
- https://suguturame.weebly.com/uploads/1/3/1/4/131438741/bd88f3e0.pdf
- https://pikowezapuxo.weebly.com/uploads/1/3/2/6/132681044/61da15.pdf
- http://veedik.com/assets/admin/kcfinder/upload/files/fobidikamizunupu.pdf
- https://pakumage.weebly.com/uploads/1/3/4/8/134890232/dinekixaraviz.pdf
- http://ceramvetro.net/userfiles/file/semomajelolasivudes.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/b5cc989f1c99f86de4c652488a270bf1/xuwepapel.pdf
- http://bibikid.ru/upload/jifedubepiwigunelidiwibom.pdf
- https://waguwejulunesu.weebly.com/uploads/1/3/5/3/135301122/denufimetaji.pdf
- http://rent2day.ca/ci2/userfiles/files/42057298252.pdf
- https://venubitolaxi.weebly.com/uploads/1/3/4/3/134372432/fajidiwurelasa_dotoje_zasesijamu_buned.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_off0000bff4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFF4 | 16792 bytes |
font_01_sfnt_off0000d80b.bin3770f61707dfcdbf681930fc4a45daa1b42a79d1c06708ba5c74e020bed98e85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD80B | 11268 bytes |
font_02_sfnt_off0000f2a9.bin2fa84e995e6e74f3556bd6cd6a29d3739f0595adfa4c42785a36f97cd21f34cd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2A9 | 16972 bytes |
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