Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d840c131fd9c1e…

MALICIOUS

PDF

76.7 KB Created: 2021-02-26 19:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bddeaac254eb0ef6464c6f70b91e21bc SHA-1: 805fbcce432aa8eff2ec20981a0024746092b7be SHA-256: 57d840c131fd9c1e10936c9e36b1bbb31b0bf215e3cfe83a07ad56a25550f9e9
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/wix?keyword=bo3+shadows+of+evil+easter+egg+steps In PDF document text
    • https://cdn.sqhk.co/duxadikoti/ifgzjhG/toca_hair_salon_3_game_download.pdfIn PDF document text
    • http://kovuzaxaf.medianewsonline.com/notutojazidurufewod.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/reading_scales_worksheets_year_4_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_6032c682d4c6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505096/normal_5ff870e18002f.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/uhaslkB/pedometer_step_counter_pro_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_6024791527346.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/55642652921.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/dell_r710_firmware_update_idrac.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/fReichb/21545032708.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/84531807795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369915/normal_5ff22e7a80014.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitasixan.atwebpages.com/what_is_the_lesson_of_the_ministers_black_veil.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/sonic_all_stars_racing_transformed_soundtrack.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/81868012037.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/xiguxokisivatimusopi.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/spanish_vocabulary_words_app.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/lagu_ainun_habibie_bcl.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF026 5668 bytes
SHA-256: f6e65ca677e94449e9f89ee5e2bf45a196264432baa4b225bbee1244cfaad8e7
font_01_sfnt_off0001038e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038E 9972 bytes
SHA-256: 1a7be7346c909f47b87938742e1c1095a6361aacf2c323cde324b4a391899413

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