Malicious PDF — malware analysis report

Static analysis result for SHA-256 d23e8d4c213c8d2d…

MALICIOUS

PDF

71.9 KB Created: 2021-02-27 14:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cc64fbc2df8d7a66cfa2d7f3c0f67dce SHA-1: 7b030808b15572195f26920e65f40f4cd565b12c SHA-256: d23e8d4c213c8d2daed04e27cee9f5b37f3bfeebda0aadc954ce389a5f27a27d
126 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
  • 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://botokaw.ru/award?keyword=what+is+doctor+of+philosophy+in+computer+science PDF link annotation
    • http://leninuludobodu.mygamesonline.org/sat_essay_and_subject_tests_cancelled.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423148/normal_5ffb80c008bc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413002/normal_6029f2f18db05.pdfIn PDF document text
    • http://antileqphh.site/analects_of_confucius_book_7_summary3iree.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410201/normal_5fed9cf589614.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/PNYWXie/lego_ninjago_dragon_hunters_sets.pdfIn PDF document text
    • http://xrootunited.com/77916517106mycwd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387567/normal_6009193adde7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383464/normal_6011284f1b784.pdfIn PDF document text
    • http://idealicaitalia.website/73765935930giak7.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/red_burning_spot_on_back_of_neck.pdfIn PDF document text
    • http://habirovradik.ru/how_to_reset_liftmaster_myqjk0p1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_600a5ad59ac5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogivuwe.onlinewebshop.net/1424114386.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/safety_1st_car_seat_installation_without_base.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/tibijejazemanegesobiror.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_off0000dc58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC58 5508 bytes
SHA-256: 27776ad06d4aaa414e6c2a29aaaed07c3dbd8458a70775890f829827a621e94a
font_01_sfnt_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 10436 bytes
SHA-256: ddc2da650fffac1c48231257064d686ce4c29ad75cd35cc749ed660bdea09474