MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm with numerous URLs pointing to potentially compromised websites or disposable hosting. Heuristics indicate a high likelihood of malicious intent, with ClamAV specifically flagging it as a phishing trojan. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and unreadable, suggesting it's not intended for human consumption but rather as a vehicle for these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://erdivigado.hu/userkepek/file/91263049804.pdf In PDF document text
- http://nakajima-ya.com/upload/save_image/files/21413742737.pdfIn PDF document text
- http://polenes.cl/userfiles/file/gakuf.pdfIn PDF document text
- http://www.hydro-tg.pro/upload/file/77243773034.pdfIn PDF document text
- https://efsanepin.com/calisma2/files/uploads/dukuwagovevuwodogolo.pdfIn PDF document text
- https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/bamumevunejokakanaterotub.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d18b0baa0---14421373892.pdfIn PDF document text
- http://hoshitorionline.com/uploads/files/vifebumanodemavekusaw.pdfIn PDF document text
- http://www.vikingmaterials.com/img/86357832979.pdfIn PDF document text
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/04f7e870569670f813bc652dc280283f/30075733527.pdfIn PDF document text
- http://aliceinformaticasrl.com/user/pages/62272155735.pdfIn PDF document text
- https://lawina-radom.pl/files/file/14665496786.pdfIn PDF document text
- http://rioairporttransfer.com/ckfinder/userfiles/files/19638376194.pdfIn PDF document text
- http://www.anieliasfx.com/uploads/textareas/file/15116051924.pdfIn PDF document text
- https://bnbtravels.com/ckfinder/userfiles/files/penunababolulubefo.pdfIn PDF document text
- http://saovietgroup.com/upload/FCK/file/39784557348.pdfIn PDF document text
- http://anhuizhkj.com/upload_fck/file/2021-7-10/20210710131400456130.pdfIn PDF document text
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0cbb498e6---vomamawovegew.pdfIn PDF document text
- http://olympicburger1988.com/uploads/files/21931280369.pdfIn PDF document text
- https://elnativocoffee.com/silver/upload/files/46913751075.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c03ecc5ecca---gexulusexa.pdfIn PDF document text
- https://upbfassadenbau.com/upload/file/vesozigemenajogiv.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=graphing+quadratic+functions+worksheet+answersPDF 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_off0000c528.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC528 | 15852 bytes |
SHA-256: 256227f97b867e0c54c637e2f5941c6392fe4c927b98fd23376f6dc4d49e88bf |
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font_01_sfnt_off0000ee06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE06 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001061d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1061D | 11316 bytes |
SHA-256: 662baf3af2fe4fa22d08d9b82fb3f1aaad534ab4daeacadb7dbcfceedd8e1d7c |
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