Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d24a9ed1199a17…

MALICIOUS

PDF

71.7 KB Created: 2021-10-01 15:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 02f770d65a54ee0684350d72a94f7a9e SHA-1: a23e8192616b31b97dff19f902f96fe3391d5e74 SHA-256: 85d24a9ed1199a179f1b6fa6039ecbb24c06b76af92938ac83909fc1301eb93e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nomylo.ru/uplcv?utm_term=pengaturan+sms+android PDF link annotation
    • https://lolakarimova.uz/ckfinder/userfiles/files/61244647978.pdfIn PDF document text
    • http://homeopathyhongkong.cn/files/27850211037.pdfIn PDF document text
    • http://kbchina.de/upload/muguduwubazufepufozuxu.pdfIn PDF document text
    • http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wudufemuvobumagesazowu.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/wotebipirevuretaxosiw.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/wuzitexogeful.pdfIn PDF document text
    • http://www.vnos.vn/app/webroot/uploads/files/sofit.pdfIn PDF document text
    • http://karinameal.com/imgdish/files/memebosamizu.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615145476ea9f---tiwizezavewavop.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/panuxogoded.pdfIn PDF document text
    • http://teamwork-poetschke.com/ckfinder/userfiles/files/119741005.pdfIn PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/47118053173.pdfIn PDF document text
    • http://greenglobepms.com/uploads/gaxadufugirupuwoxeked.pdfIn PDF document text
    • http://giprozdraw.ru/ckfinder/userfiles/files/25568901910.pdfIn PDF document text
    • http://yushendesign.com/images_fck/file/1630970530.pdfIn PDF document text
    • http://www.uc-kushiro.net/images/library/File/38506328376.pdfIn PDF document text
    • http://polipack.ru/content/file/debikuvowepejubovike.pdfIn PDF document text
    • http://icbiz.ru/userfiles/file/bisawobesifaginusije.pdfIn PDF document text
    • http://xn--80aer5aza.xn--19-kmcm3c.xn--p1ai/ckfinder/userfiles/files/detipajamumakijewowezuki.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/cjkebc5j60q9507c5ugd1qmdi4/katejedokepewoj.pdfIn PDF document text
    • http://klpa.net/userData/board/file/67204840510.pdfIn PDF document text
    • https://www.piramideidiomas.com/ckfinder/userfiles/files/nelutitunelisu.pdfIn PDF document text
    • http://mcutech.net/files/zapajako.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_off0000b219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB219 10644 bytes
SHA-256: 23161d9bc43926f4920b9faefaaec9ac36226c294728d02f2276ac410dba7b44
font_01_sfnt_off0000ca45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA45 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE257 18696 bytes
SHA-256: 68e54c86d44cb417c53296a66d81656b04dacd6bd48da8964de985806461d54d

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