Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c134392bc7a7aa…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 06:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 14daf1f2f4e2d0ea41db1f86dbe10c63 SHA-1: d4d4e11efdde8bf65a5631f10aa65dab80bb7fa7 SHA-256: 33c134392bc7a7aa916772777e5b0c214bdcca2d98abcadba19c93a1aaed2972
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=rosario+ala+sant%25C3%25ADsima+virgen+mar%25C3%25ADa+misterios+gloriosos In PDF document text
    • https://cdn.sqhk.co/towinomer/iaZjdii/hearts_of_palm_taste_good.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizozife/3pnjcX7/bumobikesanapupurikij.pdfIn PDF document text
    • https://sewobefavewekog.weebly.com/uploads/1/3/4/3/134367647/wegudazidebudaf.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/kibiwigasuwit-jelabadozo-kesesinu-wiwapi.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/how_to_add_video_to_wix_site.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/razes_do_brasil_srgio_buarque_de_holanda_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415526/normal_5ffd49cbc706d.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/14410400442.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/is_revere_ware_made_in_the_usa.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/final_fantasy_tactics_strategy_guide.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/nexuwikuritalibami.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/clDT7gj/cascade_united_methodist_church_staff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/saretuwevogepolubegejos.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/48828308785.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_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 5128 bytes
SHA-256: 3e955bfe445051e6d506e0fa954626c791dd0af7a1d63e69eba395d9e49ec151
font_01_sfnt_off0000ed97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED97 11460 bytes
SHA-256: 796e7d2872756cd0bfb5ed5fa53a5e4371960ba25aaeb0969e9105b0f380ff65