Malicious PDF — malware analysis report

Static analysis result for SHA-256 54750708d425a072…

MALICIOUS

PDF

71.4 KB Created: 2021-03-02 23:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 84aec4863c5fb7e78ef15091201c5abd SHA-1: aac3b4a10a1e9cf7beada5b3aa267e0ad971d186 SHA-256: 54750708d425a072c987c6d95fb954ee20b25fe7da2b1e873636626a632c5d85
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yafferge.ru/wix?keyword=viewing+guide+cinderella+man+answer+key+pdf In PDF document text
    • https://cdn.sqhk.co/sawijewabob/8skjegd/xukazavezoxurute.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/how_to_install_procharger_on_silverado.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/jfiaiiK/39298456095.pdfIn PDF document text
    • http://lienforkid.com/jobesisuwowowofoxafogio90c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500438/normal_601783c57c1c1.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/jihCid4/atlantic_fleet_gameplay_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/hchijaG/spooky_halloween_sounds_free_download.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/apache_spark_book_best.pdfIn PDF document text
    • http://meinekarten.best/dowirekiry0nsx.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jLkMhh7/pediatric_occupational_therapy_assistant_job_description.pdfIn PDF document text
    • http://thesimplycompleteseries.com/android_emulator_screenshot_location_mac4gciz.pdfIn PDF document text
    • http://izzzaaa.space/follicular_lymphoma_treatment_guidelines_2018d4kmq.pdfIn PDF document text
    • http://libertinemodels.com/ketchapp_basketball_hack4qd12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488141/normal_600bf39a4cb27.pdfIn PDF document text
    • https://cdn.sqhk.co/ledazukogim/gejagfc/video_download_for_tik_tok_no_watermark_2020.pdfIn PDF document text
    • https://givolejemaxo.weebly.com/uploads/1/3/5/3/135345859/ca73cd7150eaa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/wisiwi.pdfIn PDF document text
    • http://wobanunep.myartsonline.com/ligog.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_off0000d853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD853 5696 bytes
SHA-256: 5d289bce667009c36eda0cc19fff00a40a07f1239af5cb451dff9e290d8de020
font_01_sfnt_off0000ebc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC5 10028 bytes
SHA-256: 592a82065d8d472a173ecc5a0bfb1f0c7c3bfa2cbf8babe19eca24e9a1900830

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