MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains multiple heuristics indicating malicious intent, including PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS. It directs users to external URLs, such as 'https://synerhu.ru/uplcv?utm_term=how+to+update+security+patch+in+android', likely to deliver a secondary payload or phish for credentials. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links to disposable domains strongly suggests a phishing or scam campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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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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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://synerhu.ru/uplcv?utm_term=how+to+update+security+patch+in+android PDF link annotation
- http://ideatity.com/ckfinder/userfiles/files/wajapegazikevevipag.pdfIn PDF document text
- https://www.pollackmihalyiskola.hu/ckfinder/userfiles/files/51828222149.pdfIn PDF document text
- https://alutat.com/data/file/949531173.pdfIn PDF document text
- https://oolong-dining-co.com/webroot/editor-uploads/files/89051004284.pdfIn PDF document text
- https://postele-z-masivu.sk/ckfinder/userfiles/files/36494913562.pdfIn PDF document text
- https://sklep-pinokio.pl/web/uploads/files/71048405742.pdfIn PDF document text
- https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/tupevi.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161459dabe3817---xovaberasopawizenis.pdfIn PDF document text
- http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/53203131151.pdfIn PDF document text
- https://tanthueviet.vn/img_data/files/buvonuxisafosonodulitu.pdfIn PDF document text
- http://dintainoodle.com/uploads/files/witinijolezifuw.pdfIn PDF document text
- http://aan.kz/ckfinder/userfiles/files/bekilusofuxika.pdfIn PDF document text
- http://1666-3668.com/attach/userfiles/file/soxukopapep.pdfIn PDF document text
- https://kligi.viart.lt/ckfinder/userfiles/files/tetopesupotim.pdfIn PDF document text
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161449df3259a6---rawivoj.pdfIn PDF document text
- https://cmfnepal.org/userfiles/files/55109006748.pdfIn PDF document text
- http://tmkb.org.tr/ckfinder/userfiles/files/savemigut.pdfIn PDF document text
- http://xingyeknitting.com/userfiles/files/19925807830.pdfIn PDF document text
- http://vasvaripalmuzeum.hu/upload/file/rojebijizo.pdfIn PDF document text
- http://kxzyjy.com/CKEdit/upload/files/91212548025.pdfIn PDF document text
- https://oktatas-konyveles.hu/term_extr/files/wusesomixodorewo.pdfIn PDF document text
- http://mxag.com/upload/browse/file/84693630989.pdfIn PDF document text
- http://densayhongngoai.com/uploads/userfiles/file/54617601898.pdfIn PDF document text
- http://tupnate.com/ckfinder/userfiles/files/foxonitadadurilawopepu.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_off0000b1f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1F8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA0F | 10856 bytes |
SHA-256: 7094d81f0f075b5bbd286fa965099a354aa9358dc7843a879b53b8a76774422f |
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font_02_sfnt_off0000e31f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE31F | 15124 bytes |
SHA-256: 3f9cbe05e2997b0624d6027ea621866165a451343e80b6344a18de85e7ef7dc3 |
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