Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa1bc2ed5b1c32b…

MALICIOUS

PDF

71.6 KB Created: 2021-03-01 02:24:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: afdf001f44aad217e2e44689ef014268 SHA-1: 3b7e1d72966798247bdd70ef62c243716e7a7970 SHA-256: 2fa1bc2ed5b1c32b05e9de5a7380f95e24b92d728b5c4845aecd63f5e4f1b499
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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/award?keyword=2005+cadillac+cts+for+sale+in+saskatchewan In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fd6e1d2763d2.pdfIn PDF document text
    • https://cdn.sqhk.co/manewujunug/figgdun/carrie_underwood_songs_youtube_blown_away.pdfIn PDF document text
    • http://delinapod.mypressonline.com/89379272632.pdfIn PDF document text
    • http://fajamad.mypressonline.com/pafog.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolijitow/1dhhPhM/ice_hockey_training_session_plan.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/how_much_is_a_bowflex_bike.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/hHNgc2n/40767017572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471083/normal_6022924225092.pdfIn PDF document text
    • http://vasazuruxu.iblogger.org/91364527459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392457/normal_6006116b70675.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/89856299032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_6016b552c52f8.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/iibii5O/97798657259.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jezevenakos.myartsonline.com/ncaa_division_2_football_championship_history.pdfIn PDF document text
    • http://nosijatigatu.epizy.com/holistic_nursing_scope_and_standards_of_practice_2nd_edition.pdfIn PDF document text
    • http://serivisaruwe.epizy.com/4580631381.pdfIn PDF document text
    • http://runuvabono.rf.gd/levenes.pdfIn PDF document text
    • http://lazunebenak.epizy.com/61899174473.pdfIn PDF document text
    • http://titugol.atwebpages.com/medical_terminology_worksheet_answer_key.pdfIn PDF document text
    • http://zadosuwiwebuw.epizy.com/90740809696.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/contract_law_definition.pdfIn PDF document text
    • http://vudalulok.rf.gd/ashampoo_free_for_mac.pdfIn PDF document text
    • http://gozidonozali.myartsonline.com/86394880759.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_off0000d584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD584 5568 bytes
SHA-256: 54ddcfbf8d06f133914792467c8973895869b97164d44bea3a5d53443a155922
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 12432 bytes
SHA-256: d239a4e2fccf089e91075b3ed457f6750bf4d466b4bdd9eafd2f1bc027cd3172

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