Malicious PDF — malware analysis report

Static analysis result for SHA-256 59393c2f02e5f1e2…

MALICIOUS

PDF

69.3 KB Created: 2021-02-25 15:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 70f8bbc336e704c30be7105658846a80 SHA-1: dc71a80615514fccc5ed27023cb03d28ec66ae24 SHA-256: 59393c2f02e5f1e2f40989b6c0923c55aec944a715238ee44308746c404f6c9d
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://maypoin.ru/award?keyword=what+is+the+other+term+for+captive PDF link annotation
    • http://jetelijunejuk.iblogger.org/jujuvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_6017458652416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_5fe8a5600b6bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501041/normal_6002487c0209d.pdfIn PDF document text
    • https://cdn.sqhk.co/xituvusaw/iR5hbig/sound_absorption_coefficient.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/e7iSQ4W/kupuk.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/DGmM2jd/best_video_to_gif_converter_software.pdfIn PDF document text
    • https://cdn.sqhk.co/midijanere/bjbjbyk/dream_club_zero_ps3.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/tanapilamaxi/research_proposal_sample_for_phd_in_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/adverb_exercise_for_class_8_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/nowezoxojukatoge.pdfIn PDF document text
    • http://xirokigekokumar.rf.gd/jinonuvigonisudolu.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/africa_toto_choir_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/10171838740.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/24146690870.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/convention_108_explanatory_report.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_off0000d25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25D 5296 bytes
SHA-256: d100e52c0d950d85108218d7d634eb5d0fbc9214a2a06ae5d24296466e90dd40
font_01_sfnt_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 10536 bytes
SHA-256: a1090ed05fe54a20bda51f2b5758887f1f191eec45a666b59928239b0094873d