Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e6dedd630618bb…

MALICIOUS

PDF

69.8 KB Created: 2021-02-12 13:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9f252b32caf8d5ca0108d3a67527a832 SHA-1: c580332e28c197e49f4501697e36daae81b2c07d SHA-256: 42e6dedd630618bb7b07eaf765b2e570ca3b1920c9ff88d02395940c177c6316
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wb?keyword=alcoholes%20nomenclatura%20iupac%20pdf PDF link annotation
    • https://cdn.sqhk.co/wetoxojixan/ghbihjc/51322591449.pdfIn PDF document text
    • http://nout-prodat.site/gadupezaxofabutur6eoh8.pdfIn PDF document text
    • https://cdn.sqhk.co/babijuvawov/gf26mjd/2281849491.pdfIn PDF document text
    • http://regsenatvumen.website/cuerpo_visualizer_basado_en_medidasyogh4.pdfIn PDF document text
    • http://koguled.22web.org/vogebema.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/hgiggi6/topid.pdfIn PDF document text
    • https://cdn.sqhk.co/wafifovuwel/hcqgdic/rugby_league_1985.pdfIn PDF document text
    • http://idealica-ituficiale.website/10176520231arnbc.pdfIn PDF document text
    • http://ourfanz.com/rosileganexobape20eu3.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/tetenifeme/nomifirosedasunubilem.pdfIn PDF document text
    • http://zuronixo.rf.gd/personal_letterhead_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/11127836632.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/tawulifa.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/new_bollywood_movie_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/fobajonivesusadixako.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_off0000d217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD217 5384 bytes
SHA-256: d03dbcc01a475a7424d34260492caf7d55b4d1ad4335b75580046a0e535e4d7e
font_01_sfnt_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 11204 bytes
SHA-256: c49fd670e369eb9e4f38db93ecbcaa4d84df9c5d6ac6746aca81a4618f173ecf