MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple external websites, some hosted on potentially compromised CMS platforms. The presence of numerous URLs, many associated with disposable hosting and SEO-related parameters, suggests an attempt to distribute malicious content or engage in phishing activities.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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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 http://www.verneteco.com/ckfinder/userfiles/files/bujenemakinakisimosolata.pdf In PDF document text
- https://thaiahpa.com/flash/files/bofevof.pdfIn PDF document text
- http://fresh-j.info/images/uploadedimages/file/78669807465.pdfIn PDF document text
- https://drproperty.in/userfiles/file/lilujis.pdfIn PDF document text
- http://markone-tools.com/upload/files/29996937788.pdfIn PDF document text
- http://tecsun-moscow.ru/docs/file/burajituvipav.pdfIn PDF document text
- https://editora-arara-azul.com.br/site/admin/ckfinder/userfiles/files/suwezazemifupijopiz.pdfIn PDF document text
- https://maciejabramowicz.pl/upload/files/file/55479885641.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1615043da5724e---joxufokaxumuxiperu.pdfIn PDF document text
- http://acelybio.com/upload/files/wudonu.pdfIn PDF document text
- http://richmore.kr/uploadfile/fckeditor/file/55233094941.pdfIn PDF document text
- https://dycmc.com/DATA/upload/files/202109230051207282.pdfIn PDF document text
- https://tese.in/ckfinder/userfiles/files/65417939664.pdfIn PDF document text
- http://rapabzenec.cz/obrazky/files/31103646.pdfIn PDF document text
- https://ustunbilgisayar.com/userfiles/files/jopavaxivivirobozawet.pdfIn PDF document text
- http://www.jfac.kr/ckfinder/userfiles/files/22596649057.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/p1sl3srkpe5bb5dk2smptki4ub/babexegaw.pdfIn PDF document text
- https://ekransamara.ru/files/rarunofikelimamek.pdfIn PDF document text
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16133f4928c1a7---kepuvafavimik.pdfIn PDF document text
- https://groupunsur3.com/contents/files/10162171901.pdfIn PDF document text
- https://singlespeed-switzerland.ch/userfiles/files/7284183071.pdfIn PDF document text
- https://agronlogistics.com/userfiles/files/zupanijoperuzomifikora.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=convert+website+to+android+app+online+freePDF link annotation
- 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_off0000b31c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB31C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cb33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB33 | 10816 bytes |
SHA-256: 4d1802d47f003857ea055570314a4386e9752ccb4f6715fce7214b53391139e1 |
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font_02_sfnt_off0000e426.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE426 | 17620 bytes |
SHA-256: cbcb1cd0550a31d730af017f20f7bd02881d5f75867fad3726c8838fe3e7557f |
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