MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a strong attempt to redirect the user to malicious content. ClamAV detection and ML classification further confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9901
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 http://polyalpan.hu/_user/file/vusuzunutuvamuz.pdf In PDF document text
- https://almuhja.net/ckfinder/userfiles/files/zawakuno.pdfIn PDF document text
- http://shanghaiqingchen.com/upload/files/67700519473.pdfIn PDF document text
- https://maria-galland.ru/files/file/fesipemeza.pdfIn PDF document text
- http://ctmmaximoravenna.com/ckfinder/userfiles/files/diniduwoxalev.pdfIn PDF document text
- http://dongzzang.com/userfiles/file///5713963704.pdfIn PDF document text
- http://porpora.biz/imagenes/imagenes_contenidos///bikigovafe.pdfIn PDF document text
- http://elturo.ru/img/upload/files/xovemefi.pdfIn PDF document text
- http://devitohomesorlando.com/userfiles/files/nagugolutodojosidadapapup.pdfIn PDF document text
- http://sarica.com.tr/ckfinder/userfiles/files/43276557597.pdfIn PDF document text
- http://nsdadventist.org/FCKData/file/jakagesaluzufukoxiw.pdfIn PDF document text
- http://gpszone.hu/upload/userfiles/file/21335679187.pdfIn PDF document text
- http://project-lovcen.me/userfiles/file/63087393990.pdfIn PDF document text
- http://harekatmemuru.com/images/Media/files/zapepagababemofilum.pdfIn PDF document text
- http://ambulatorioveterinariocigliano.com/userfiles/files/gewin.pdfIn PDF document text
- http://infunplastic.com/d/files/4144454455.pdfIn PDF document text
- http://grupopiscis.com/upload/files/zevorudexedozos.pdfIn PDF document text
- http://2018.letnifestiwal.pl/ckfinder/userfiles/files/44828871012.pdfIn PDF document text
- http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/mb2gi4jrttm2jvm3fhni5ie4r7/97948066262.pdfIn PDF document text
- http://diamant-x.sk/UserFiles/file/suribotiruvakizaxelutemap.pdfIn PDF document text
- http://codienlanhminhquang.com/upload/files/sitatub.pdfIn PDF document text
- http://hasomedia.com/userfiles/file/bajag.pdfIn PDF document text
- http://www.sauminandy.com/fckimages/file/67016989361.pdfIn PDF document text
- http://insei.eu/userfiles/files/duzebeg.pdfIn PDF document text
- https://cbconsulting112.ca/userfiles/files/tosukufobivaj.pdfIn PDF document text
- https://allcreaturesinc.com/files/files/35072512402.pdfIn PDF document text
- https://nusamulticentralestari.com/Uploads/userfiles/files/kakunimej.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=new+game+download+2020+offlinePDF 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_off0000c1ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1AE | 10636 bytes |
SHA-256: 4a217181165c67d2acdd34fc99706c4b44cfe8aff1c0073ac52f8d396f026c88 |
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font_01_sfnt_off0000d9d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9D3 | 15856 bytes |
SHA-256: 5bccd149459d3799764a491b663653c435795d10bf2d70701a198a00dbb258d4 |
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font_02_sfnt_off0001026d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1026D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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