MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ClamAV and an ML classifier, with high-severity heuristics indicating a PDF linking to algorithmically-generated URLs. The document body is heavily obfuscated, but the presence of external URIs and link farm characteristics suggests a lure to external malicious content. The primary attack pattern involves directing users to a malicious PDF hosted on a potentially compromised or disposable domain.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://infrive.ru/uplcv?utm_term=no+dress+photo+editor PDF link annotation
- https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/161366d8ea19c7---pulikisanuxuva.pdfIn PDF document text
- http://pilot-market.ru/new/files/file/67555806998.pdfIn PDF document text
- http://zekejozsef.eu/FCKfeltoltott/file/jakabitiduriju.pdfIn PDF document text
- http://www.pibmg.com.br/ckfinder/userfiles/files/files/wiwefasozofinepotorib.pdfIn PDF document text
- http://www.nomorcantikjoss.com/file/puwosuzumeluzexarobogar.pdfIn PDF document text
- http://yongqingtech.com/d/files/fudomaguwe.pdfIn PDF document text
- http://recuva.kr/upload/fck_img/1630755148/file/weminipap.pdfIn PDF document text
- http://halongbaycruises.org/upload/files/nebiviwuw.pdfIn PDF document text
- http://uptindia.com/newsimages/file///nixijurokakonomenuridatiz.pdfIn PDF document text
- https://marbletreasures.com/uploads/image/files/noxogalixomaxidefopu.pdfIn PDF document text
- http://julianina.dk/upload/file/wosefug.pdfIn PDF document text
- http://arsvet.ru/img/upload/95584251088.pdfIn PDF document text
- https://internationallanguagenavigators.com/media/xavib.pdfIn PDF document text
- http://hainfelderteich.at/gonakigaxebabibunove.pdfIn PDF document text
- http://gerd-pollak.de/userfiles/file/fijegodagevororab.pdfIn PDF document text
- http://ranaghatpchsschool.org/userfiles/file/sisoxudigedexuvafa.pdfIn PDF document text
- https://bankubezpieczen.pl/userfiles/file/soduz.pdfIn PDF document text
- https://hargagila.com/uploads/image/files/pudemivadod.pdfIn PDF document text
- http://jpsacademy.com/slbdavbatala/userfiles/file/49148300496.pdfIn PDF document text
- https://cancelaria.pl/galeria/file/17617108814.pdfIn PDF document text
- http://ipmarketing.net/FCKeditor/editor/filemanager/connectors/userfiles/file/sogidolunezemi.pdfIn PDF document text
- http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/96063031441.pdfIn PDF document text
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bda67e0514---91934616249.pdfIn PDF document text
- http://udmvdpo.ru/images/files/nijazapiner.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_off0000e0e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0E5 | 10156 bytes |
SHA-256: 5ee4de552cdb105dc16a0f87fa0f81e257b353e26b4217366cb6f0fe63eb7064 |
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font_01_sfnt_off0000f7b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7B8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010fca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FCA | 17532 bytes |
SHA-256: 8d12ab1c4a19db22b0d60867e302dc925a0093d0d5c0896c2be84dea09c64025 |
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