Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8288b86d6212bc9…

MALICIOUS

PDF

73.0 KB Created: 2021-02-12 20:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c34b8c122567da270d2d76112ac8a825 SHA-1: 4acc38d356235c553b64cd51d2ce70fe64dacda8 SHA-256: d8288b86d6212bc9cba4f43afcd01297e228d8c919b5e6618e8fa8c204af1594
126 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
  • 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://maypoin.ru/wb?keyword=bloon%20tower%20defense%203%20apk PDF link annotation
    • http://lumacy.site/numerical_analysis_sauer05dzm.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/daxag.pdfIn PDF document text
    • http://busibear.com/college_ruled_lined_paper_template2x5jt.pdfIn PDF document text
    • https://sopebanodi.weebly.com/uploads/1/3/4/0/134017095/1382464.pdfIn PDF document text
    • https://dunofedipusafo.weebly.com/uploads/1/3/4/4/134477286/7079246.pdfIn PDF document text
    • https://wapexuji.weebly.com/uploads/1/3/5/3/135329723/pebevuxuwijovi-jutafanemosow-vaduxijodotabew.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/Vjehbgf/virgin_pulse_northwell_health_login.pdfIn PDF document text
    • https://terulupi.weebly.com/uploads/1/3/1/4/131406892/b367365828.pdfIn PDF document text
    • https://cdn.sqhk.co/rodoruwuwab/SKMVDIf/66513913497.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/bejenosugede/mitonaka.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/10231661427.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/spreadsheet_software_programs.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/4g_lte_wifi_modem_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/loctite_587_blue_high_performance_sds.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/cardiff_uni_council_tax_exemption_form.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_off0000de14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE14 5404 bytes
SHA-256: aee05c66184d045edcef6468b3e4db31bb922102bf2b12d8c01b9eadff0732a2
font_01_sfnt_off0000f09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09F 11416 bytes
SHA-256: 5f148e6b8a9aff202a8e381200729d640767f9cc0d279575d8c9bf5fb6104295