Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8fd76d14f80e16…

MALICIOUS

PDF

71.2 KB Created: 2021-02-25 17:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b4b966e3d8a9077ac9070d8b1e0d61e4 SHA-1: eb79ea85a9e65bff391b238545bd343026ce374a SHA-256: fe8fd76d14f80e16eb00a6a0c644c0c6b98b0ffb0bce0207be0d199f4b884f69
194 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
  • 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.
  • 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.
  • 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://crophysi.ru/award?keyword=critical+theory+today+chapter+3+summary In PDF document text
    • https://static.s123-cdn-static.com/uploads/4488855/normal_5fcabc0984faf.pdfIn PDF document text
    • http://businesslinecenter.com/57579690328b1pgx.pdfIn PDF document text
    • http://reweder.site/cara_flash_hp_oppo_neo_3_manualmcutx.pdfIn PDF document text
    • http://gravkamen.ru/dog_friendly_bubble_machine8ej1c.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/Hmghxgf/tinudilabelomamazikeruv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_5fe6d30ba68bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fd60e3c3f5b9.pdfIn PDF document text
    • http://qupieasy.online/xugotopusasowotidopezg7zu.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/gZnyTLt/50301291812.pdfIn PDF document text
    • https://cdn.sqhk.co/sunaxidida/hjjijgk/scanner_un_qr_code_avec_samsung_s7.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/jevopemosod/grid-_template-_columns_repeat_5_1fr.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/mapleroyals_cleric_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/cadbury_nigeria_plc_annual_report_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/bumikatene.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_off0000daa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA3 5484 bytes
SHA-256: 2ea4935041c37097a9e437a138367012fbda31f7c7bb6a7496e19bfbb29a3e19
font_01_sfnt_off0000ed23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED23 10176 bytes
SHA-256: 518e3ed0771ac09cc4276a80e8569072ecf4b5ec84eed782e64e90160e0a39ce