Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a591cad79878fc…

MALICIOUS

PDF

64.3 KB Created: 2021-01-30 04:30:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 75eb80bdfe466f195510e8283c594cc6 SHA-1: 8fd340d51d14d2002ffd19d2ac2ac68ff0b18867 SHA-256: 72a591cad79878fc8705f435aa3092a7221227a1e3a77a3db2532db383508327
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/aws?utm_term=alcatel+lucent+8028s+manual PDF link annotation
    • https://cdn.sqhk.co/jijasitov/jbjfoFM/95760166739.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/TLiim0l/novitasavoboxod.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/7jcjbfx/pirazulukizadonuvezekewor.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzalolotagi/NxHiegn/movie_poster_wallpaper_1920x1080.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/cghFgfy/rope_untangle_master_3d_model.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/aXBghhj/hacer_recarga_claro_el_salvador.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/1KgVhaL/top_ten_best_penalty_takers_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/TDkcNOF/wewuxemeji.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/remavuj/nevav.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/wipro_campus_interview_aptitude_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/mechanisms_of_evolution_bioflix_tutorial_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/64744781791.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/chronic_hepatitis_c_treatment_guidelines_aasld.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/21362920112.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/3d_games_free_for_pc_offline.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_off0000ba11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA11 5308 bytes
SHA-256: d45fabf776c96dbe7d6dd07ec4be8bca8dbff5dd3c99f08b3f13a409a49e544a
font_01_sfnt_off0000cc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC09 12776 bytes
SHA-256: e441b18ece558e2a903d5357c2c98c2c821e1bcda9864f402adbcac91dd55bca