MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous URLs, many hosted on compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating a tactic to obscure the true destination of the links. No scripts were extracted, but the overall structure points to a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://laborke.ru/uplcv?utm_term=oxford+word+skills+intermediate+free+download+pdf PDF link annotation
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b79fab95e01---lidopuzimojodu.pdfIn PDF document text
- http://ducthanhtam.com/uploads/userfiles/file/70208075137.pdfIn PDF document text
- https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16081f555eb1f2---kikifanojuvinimal.pdfIn PDF document text
- http://meruzhankhachatryan.com/app/webroot/files/file/47861710199.pdfIn PDF document text
- https://estoniapools.com/contents//files/mivisuguragatekofukotibif.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e0df74e10---23337122634.pdfIn PDF document text
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c49b66389---3291452889.pdfIn PDF document text
- http://ambulatorioveterinariorigolon.eu/userfiles/files/rebojivezuno.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f32d549b2c0---xinafatirariti.pdfIn PDF document text
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c220d4cca8d---rupos.pdfIn PDF document text
- https://myagenda.myagenda.cz/pictures/editor/files/74381158655.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/5958516415.pdfIn PDF document text
- http://hkalc.com/userfiles/sujaxajonukuvof.pdfIn PDF document text
- http://fw-simple.com/uploads/files/4653211864.pdfIn PDF document text
- http://provia-events.de/pics/fotos/1/file/69641395098.pdfIn PDF document text
- http://dreamcatcherltd.com/userfiles/file/veziwiwibekovafa.pdfIn PDF document text
- http://gruppocaminiti.it/userfiles/files/23649351793.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160abe65f682a9---sigaresikamevisozetivaz.pdfIn PDF document text
- http://uktohabbarijamalta.com/files/file/56896427892.pdfIn PDF document text
- https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/pinizimodedefurofup.pdfIn PDF document text
- http://bsa.by/ckfinder/userfiles/files/11244553788.pdfIn PDF document text
- https://rrrc.us/userfiles/file/5035076631.pdfIn PDF document text
- http://airelimpio.mx/img/editor/file/66226995318.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_off0000b576.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB576 | 10964 bytes |
SHA-256: a7700f1832cb32651b30c3c555245315f7b43d3c3dfaf22107c4a0115c06df76 |
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font_01_sfnt_off0000cef4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEF4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e706.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE706 | 19084 bytes |
SHA-256: 150cdcdb9f82d7ec842aa8c15cfac368f1caef6c268d268023cffe8f1702c5b6 |
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