Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d029ce08ed4411…

MALICIOUS

PDF

73.0 KB Created: 2021-03-03 02:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0ddbad4a4db2f4e1ae51d45067085cc5 SHA-1: af14dd240066bf6bfe2847ac0b21753c7852bce5 SHA-256: b1d029ce08ed4411c25ebf20876ee0c9b27c0753d3835da674f893a02393a358
194 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
  • 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://yafferge.ru/award?keyword=pronoun+practice+worksheets+for+2nd+grade In PDF document text
    • http://begdas.fun/laminate_sheets_suppliers_philippinesxkgq3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408601/normal_600824d9d3aa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407069/normal_603c71ea9a6dd.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/KCieNhc/ant_killer_terro_amazon.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/harvard_best_cover_letters.pdfIn PDF document text
    • http://kogutojoveso.mywebcommunity.org/kegikifelisuxeretol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383702/normal_5fe16ec59e0e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376856/normal_6037808e154aa.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/44455161455.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/nebezimutivobufejesuwgq8x7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415308/normal_6011fb671a8da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/saxefi/glo_bus_simulation_quiz_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/baarish_song_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/gefibekopepege.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/4901818977.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/48857465518.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 5556 bytes
SHA-256: 2171253e03bd31b258d97eabd5b06f751a3d021f544e48d5c36c584823ccdf59
font_01_sfnt_off0000e65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65E 9964 bytes
SHA-256: 6e5062b5bfff4687b29c8dca541ca409524503b9fcb0ec3148913f90b32682ea
font_02_sfnt_off00010880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10880 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176