Malicious PDF — malware analysis report

Static analysis result for SHA-256 66bbcc73638fc304…

MALICIOUS

PDF

71.2 KB Created: 2021-03-04 10:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f39578dca9a97989de88eef3d8af265d SHA-1: 48298a0ca3f75351d353fe4543aed311e1e78cec SHA-256: 66bbcc73638fc3045235f603f30ffab92f75a081139f27918ccf8ce4383ee4b2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=sdsu+spring+2020+course+catalog PDF link annotation
    • https://fuvipizewovotat.weebly.com/uploads/1/3/1/0/131069886/pibon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501794/normal_5fff7f16c5c7c.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/14993266596.pdfIn PDF document text
    • http://rujisuki.mygamesonline.org/38531742837.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/2017_ktm_duke_390_owners_manual.pdfIn PDF document text
    • http://vehicleinsusa.com/boarding_pass_invitation_template_photoshop3aw24.pdfIn PDF document text
    • http://clubstore.pro/tell_me_three_things_free_download1oky4.pdfIn PDF document text
    • http://akb54.ru/cisco_packet_tracer_for_mac_freeqfljm.pdfIn PDF document text
    • https://guxenebulofoto.weebly.com/uploads/1/3/2/8/132814975/monewu.pdfIn PDF document text
    • http://aires.fun/what_does_little_tree_black_ice_smell_likesd627.pdfIn PDF document text
    • http://lami-lashes.site/vans_old_skool_plataforma_checkerboardqdz0j.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/lame_enc.dll_fr_audacity_download_windows_10.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/taguxif/exception_in_thread_java._lang._numberformatexception.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/circuit_court_case_information_newport_news.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_off0000da59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA59 5620 bytes
SHA-256: b9068f94a4294247b49243a003e14173f259094a5e6177a14204ece049e3dd62
font_01_sfnt_off0000ed83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED83 10132 bytes
SHA-256: 7331a24eeed4b1fb91b5dbbe1fb1e17be77e649360b0d6c621911acfe2889fff