Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e00f8856c35bb90…

MALICIOUS

PDF

82.8 KB Created: 2021-09-22 09:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: acd749ed72f7fef6a503047394ec500d SHA-1: 56dbe232a7edf2a865312c48bd70180b46fa0602 SHA-256: 0e00f8856c35bb90a7c78650eac8151973b212d647eaaf3b695d55635164115f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed for SEO poisoning. The presence of a URL with 'download rtx mod for minecraft pe' suggests a lure to trick users into visiting malicious sites. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://catamma.ru/uplcv?utm_term=download+rtx+mod+for+minecraft+pe
    • http://greenlivinggarden.com/htdocs/UserFiles/file/xibasiretufenowesifudilun.pdf
    • https://abandassociates.com/ckfinder/userfiles/files/84708387649.pdf
    • http://tiendanatacion.com/noticias/files/tunapaxegisuripokapob.pdf
    • https://alirezamirmohammadi.com/images/upload/files/888865263.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613745c172db3---disugiriwoko.pdf
    • http://dylogistics.com/userData/board/file/bekonirinetunadidimena.pdf
    • http://accessibilite-salle-eau.com/ckfinder/userfiles/files/nixapusixovigu.pdf
    • http://aftckwt.com/uploads/file/47281366426.pdf
    • http://chpcentre.com/files/file/9226336158.pdf
    • http://theofficeplus.com/userfiles/file/denuwar.pdf
    • http://geometrarontani.it/userfiles/files/3638031092.pdf
    • http://c-six.it/userfiles/files/86040761746.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614795e675d49---69175029305.pdf
    • https://cyberbirddog.com/userfiles/files/68605187527.pdf
    • http://biometria.pl/photos_fck/file/tudawonogizemomixewipezi.pdf
    • http://at2apigroup3.com/contents/files/dizebitujaxafajazevolemux.pdf
    • http://www.psoealora.es/ckfinder/userfiles/files/dotopizofegupapi.pdf
    • http://permagnet.com/upload_files/file/2109040454038559788htg6h.pdf
    • http://miroslaws.com/ckfinder/userfiles/files/55044160615.pdf
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614423f71b786---49832575394.pdf
    • https://rtquery.reitoken.org/Coaching123/images/files/vamivusetisezivuvadegek.pdf
    • https://mamo-tato.ro/userfiles/file/zubeko.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/dvu7p9m755du8p8j3dsoldfl9f/25521664221.pdf
    • http://baoveantam.info/upload/files/zesigejovakavirazix.pdf
    • http://cansuyu.org/resimler/files/jademefovaduka.pdf
    • http://pn-tech.net/userData/board/file/zefina.pdf
    • http://alhambra.kopanramen.com/uploads/files/makidoganigefezeluga.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df4c.bin
3c3bd3e0e873ab5e552da9a7afa19a91296ff2f583c8538ee0f3b681e055f099
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4C 10804 bytes
font_01_sfnt_off0000f832.bin
95619e07bb8f65cb026c98f40e291db6274ffc6bc765251eec3af996d23308de
pdf-font-stream PDF embedded font (sfnt) at offset 0xF832 17132 bytes
font_02_sfnt_off000124e9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x124E9 16792 bytes