Malicious PDF — malware analysis report

Static analysis result for SHA-256 746a664671b22bac…

MALICIOUS

PDF

81.9 KB Created: 2021-03-01 10:23:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 15ba7c13b7dd0dcc5fbe6fa33e67bd32 SHA-1: 14a3ea7b97631bab0e70bdf913010c432b9a83f6 SHA-256: 746a664671b22bacbf2069f390783e8c01bf1f67691c9638949eb42ed1fa3818
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/wb?keyword=elder%20scrolls%20online%20mage%20leveling%20build PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408190/normal_5fcde2bf51d2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5fd7c43ba2bc6.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/zifiih7/88619173259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_601359c99e730.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/fhgexMw/fegebezuberujozoba.pdfIn PDF document text
    • http://musc-media.xyz/sezumuvaputik3zxce.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/jqhaMii/falling_down_trailer_hd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_602751104bc45.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/iijjun8/barrett-_jackson_2020_las_vegas.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/3iehgjj/673862579.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/aGOf5Za/remix_os_player_cho_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/hlhdgd1/spelling_mastery_level_b_teacher.pdfIn PDF document text
    • https://cdn.sqhk.co/lanamixese/iejb3ge/taxupexebegozibazizupeta.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/eNNhbNC/52087818413.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/memento_mori_gratis.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A7 5416 bytes
SHA-256: 82f6ff84ff8aee48a6d3a69b670613a683489f3580e178fbe067bd40d1ff2abc
font_01_sfnt_off00011301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11301 11976 bytes
SHA-256: b9bfe5ff39a67e2f4570fd2def424f481bae743f0fa00df6bf98455a2390005d