Malicious PDF — malware analysis report

Static analysis result for SHA-256 8206bb42bbb52d09…

MALICIOUS

PDF

70.4 KB Created: 2021-10-01 19:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 1afbb07a27d240c1487765d4edfcc6ca SHA-1: 47921c01fde8da997555ae64cfc973193928bbd8 SHA-256: 8206bb42bbb52d09d87090e0fe779dcf021166bcb6d50f9fcdcfdd6417d9cf1e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://irlanc.ru/uplcv?utm_term=the+little+prince+in+italian+pdf PDF link annotation
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613b35490313e---motul.pdfIn PDF document text
    • http://yoshitomo-kokubunji.com/jcfiles/file/bitutatosotenexiseluno.pdfIn PDF document text
    • http://carsonpokebar.com/uploads/files/nijamumej.pdfIn PDF document text
    • https://kientrucqhouse.com/uploads/image/files/63485942910.pdfIn PDF document text
    • http://moriefrusca.com/userfiles/files/63938433266.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/97771047185.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/tejaxog.pdfIn PDF document text
    • https://posetili.ru/userfiles/file/71694940078.pdfIn PDF document text
    • https://purefeeling8.com/data/file/18580437595.pdfIn PDF document text
    • https://actor-conseil.com/files/file/80691920952.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fdaf51ef3f---68354366237.pdfIn PDF document text
    • http://ghinelliarchitettura.it/userfiles/files/vuwumegimamomofutave.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec01099211---rojonigeworofov.pdfIn PDF document text
    • https://mumegram.com/userfiles/file/84807861646.pdfIn PDF document text
    • http://tanabuauto.com/js/upload/files/40072080873.pdfIn PDF document text
    • http://magicfood-cn.com/files/20210919071248.pdfIn PDF document text
    • http://master-stroi76.ru/userfiles/file/90984619127.pdfIn PDF document text
    • https://umiyawoodworks.com/fckdb/userfiles/file/64463255031.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021092908091727.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021090407462173499.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109070034287217.pdfIn PDF document text
    • http://hkalc.com/userfiles/44650044295.pdfIn PDF document text
    • http://airzo.net/userData/board/file/54775969805.pdfIn PDF document text
    • http://ibarugi.com/fckeditor/userfiles/file/tigamotoxusebopoto.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210930224850.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/67269108026.pdfIn PDF document text
    • https://harmony.im/userfiles/file/wetiludaletixadibuto.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/7432160216.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.

FilenameKindSourceSize
font_00_sfnt_off0000b6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ced0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED0 14960 bytes
SHA-256: 5bee6e07d61f3ecb8b5b75f35ddc294427d1a412a8db19e7eec3ae0e5ba3096f
font_02_sfnt_off0000f3e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E8 10392 bytes
SHA-256: a5d6b7dc7ae19c4ca9959d6c5072834690bcda96a66580a9e4c8d94b2aace7bc

Open this report in the interactive analyzer, or submit your own file for analysis.