Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfadfc7707327738…

MALICIOUS

PDF

77.7 KB Created: 2021-10-01 17:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7d5237f9b3c21a4810fce8945407b235 SHA-1: e59a65e2aedb501f5dcd362e7a180f9927ad0e80 SHA-256: cfadfc77073277386d951a05be1b2f0e36f65f0001967459342525350434bbad
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://synerhu.ru/uplcv?utm_term=chrome+android+see+source+code PDF link annotation
    • https://valstybestarnyba.com/upckfinder/files/teloxubisexozaminodeta.pdfIn PDF document text
    • http://evo-models.com/uploads/userfiles/files/kaxutopobiligovuxotunuk.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f30a49f09c---luwolelamelukunibapura.pdfIn PDF document text
    • https://iwanbim.com/userfiles/files/61527644945.pdfIn PDF document text
    • http://dentistturkey.com/image/files/muteborubovifimojazi.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/686cf3fb0f18c5841d9c710e9a10d60e/bogidotixubudiseselaki.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/xinojudovofujajijiruxe.pdfIn PDF document text
    • http://i-physiology.ru/upload/43256999347.pdfIn PDF document text
    • http://erfansari.ir/ckeditor/files/files/lolifukirifafa.pdfIn PDF document text
    • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/dusamivudesumuf.pdfIn PDF document text
    • http://www.perchegouet.com/ckfinder/userfiles/files/44887438238.pdfIn PDF document text
    • http://bftt.marketsearching.com/upload/files/71639431440.pdfIn PDF document text
    • http://khachsansapa.vn/webroot/img/files/jepevijuzepovadejoj.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/kepevulefukeje.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/mopirofaremasijewu.pdfIn PDF document text
    • https://strategieb2b.com/userfiles/file/jodedebevesixibipijo.pdfIn PDF document text
    • https://valleyrentals.com/userfiles/file/67264387568.pdfIn PDF document text
    • http://filtrydokoparek.pl/img/all/mevaf.pdfIn PDF document text
    • http://dalnoboy.net/data/filestorage/upload/files/33152143333.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/74283884854.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/62388659122.pdfIn PDF document text
    • http://cpils.com/userfiles/file/lixovotejapamebebu.pdfIn PDF document text
    • http://svb-volleyball.de/userfiles/file/20280848398.pdfIn PDF document text
    • http://brbud.pl/userfiles/file/rapalepajozigofesojajam.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_off0000c51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC51E 19012 bytes
SHA-256: 922298aa66acae754371666bea4922736433ca37f17ca4069b3f26d482968cf9
font_01_sfnt_off0000f6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F06 10620 bytes
SHA-256: e80eb8fa11e94e4e113e41670e505a407f23c6f7a7825be453249f50f00f73ea

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