Malicious PDF — malware analysis report

Static analysis result for SHA-256 2778a59529a3aa56…

MALICIOUS

PDF

70.0 KB Created: 2021-02-25 03:11:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2a2548ffd7b027d556c62b8d9c6da278 SHA-1: 8e473d7c84677798f6e38cf80a65592988d061b9 SHA-256: 2778a59529a3aa56174eb009f805ed816956dd0feb74b6549c379f2452017917
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/award?keyword=engineering+materials+laboratory+inc PDF link annotation
    • http://drilltech.info/amazing_mathematics_circumcenter_and_incenter_maze_answers24olw.pdfIn PDF document text
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/8092706.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/26700398827.pdfIn PDF document text
    • http://teleporttur.ru/wekafokabezakupape7k2ax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365580/normal_5fedcd5803c16.pdfIn PDF document text
    • http://coloradocustomelectric.com/b._ed_entrance_exam_form_onlinecotpm.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/gnZv7hb/37464884726.pdfIn PDF document text
    • https://cdn.sqhk.co/lasijutag/gyggbjG/halloweentown_high_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501233/normal_603030124b61c.pdfIn PDF document text
    • http://lg-copyright.com/bujivopadizokidusoo4x6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zubiluwetij.myartsonline.com/27725416828.pdfIn PDF document text
    • http://piwakitidi.onlinewebshop.net/73458626168.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CC 5104 bytes
SHA-256: fe941c6d29b93cc1c6020190331aa8ea412be7f0ca713eec270f8b08527a5c39
font_01_sfnt_off0000da06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA06 10108 bytes
SHA-256: 8473cd6a0ceb13b9fa85c959f7d08bab2e8b176dead19c234a1f80b9dd4fd945
font_02_sfnt_off0000fc94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC94 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34