Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4a68b6573c7f2d…

MALICIOUS

PDF

77.2 KB Created: 2020-12-14 01:53:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 4a7e451d4db6435906037e1375ef1cb5 SHA-1: cc8014d2be8abf2c848817d70225a18ea1559662 SHA-256: de4a68b6573c7f2de0c880e5594c6b925bd0d5efa365dbd1bd428efe26c15720
136 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
  • 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://cdn-cms.f-static.net/uploads/4449419/normal_5fae4186cbedc.pdf In PDF document text
    • https://s3.amazonaws.com/degagaziv/kure_beach_nc_surf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/common_stock_value_on_balance_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382408/normal_5fccfd2cd5e19.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/year_3_maths_worksheet_tes.pdfIn PDF document text
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/vikomavidiwusisox.pdfIn PDF document text
    • https://trafffe.ru/123?utm_term=dumbbell+exercises+for+female+beginners+pdfPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e3bf.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e3bf.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off000117e6.bin)
    • https://static1.squarespace.com/static/5fce2038190b057dd37e6613/t/5fd6a71fdca22152604ca765/1607903007839/21436125232.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28998403f5353fda0357a/t/5fd19eb8871f8c6e595830ac/1607573177916/custom_maps_beat_saber_oculus_quest_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c759bf71053ccb28a36e/t/5fccf0d8c00f007ceae8e8d5/1607266520999/dimosidebatinirogobeloru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc361aa8139af03765501cd/t/5fc4c49e4e98326c02a7819d/1606730910428/lodofeja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bb7a68612547ed7f1815/t/5fcc3e5a33187724c4e4fd1f/1607220827425/bipibamegonuk.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 extracted file (font_00_sfnt_off0000e3bf.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BF 5484 bytes
SHA-256: 49fe1a6213c123accba0f0638ec725696a70c95cd2b5815e0f99ee2f6910101c
font_01_sfnt_off0000f645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF645 9808 bytes
SHA-256: 7ca42c01e0a524ccfb4c87422acf58ee81d0ffebad89156917649dfac394383f
font_02_sfnt_off000117e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34