Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2853da24bfef1d4…

MALICIOUS

PDF

69.0 KB Created: 2021-01-30 05:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a411416b2b5800adeb575167284147ec SHA-1: 77de97549e0633c6d83eb01bbeb0ede363d6f110 SHA-256: f2853da24bfef1d415c13bb836dcd630c6af4cc8e3d88a5a304557529870946e
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://bologen.ru/wb?keyword=cat%20forest%20healing%20camp%20seeds PDF link annotation
    • http://astrology-personal.online/nirejidudikabuxvrled.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/7hfiahj/zafojunopegudolod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501361/normal_6001558b2260e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385424/normal_5fe1cdb743f2b.pdfIn PDF document text
    • http://in-step.shop/business_intelligence_analytics_and_data_science_ramesh_sharda2r9i6.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/W5MNVgg/marine_weather_forecast_freeport_tx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5fc7394fdb953.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/73323033195ul771.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/jtSl4gf/617261579.pdfIn PDF document text
    • http://vykupavto54.ru/draw_ten_pin_bowlingaqrx6.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/penefelomiju/korean_drama_app_for_android_box.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/esquizofrenia_catatonica_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/34515481263.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/72121422358.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/11708969261.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_off0000d008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD008 5476 bytes
SHA-256: bcf6dddf3bbb3aa1a46eb374023e41b98263f9376500aa70154e8dd47c492909
font_01_sfnt_off0000e27f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27F 10744 bytes
SHA-256: 0d5849047ccab0d23df0081d36bb07c8a5e74a6a76544ad4c2bd2624ca4347ad