Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace81eb503e7fdaf…

MALICIOUS

PDF

72.4 KB Created: 2021-02-26 03:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cae8d9e6cbc804f74a8e80101fdd9b14 SHA-1: 0c7b571f94d0b64a77db13e82888fcb8d44ed981 SHA-256: ace81eb503e7fdaf3628fd9568aeb00d0b6f223a71536df16132955b1e8630f2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=toro+power+max+824+oe+37798+snow+blower PDF link annotation
    • http://nipokaxa.getenjoyment.net/pinodonor.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/stihl_blower_service.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/gopro_hero_3_white_specifications.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448113/normal_5fcc7b94a1a0f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374689/normal_6005ca9d576db.pdfIn PDF document text
    • http://mandarin-fruit.space/crystal_report_tutorial_in_asp._net_cgmezy.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/how_to_turn_alarm_off_on_timex_watch.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/how_to_draw_a_dog_realistic_step_by_step_easy.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/supernatural_cast_season_13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wozimape.onlinewebshop.net/xosagijezasuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/56570319713.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/avs_any_video_converter_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/19693995160.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/happy_wedding_anniversary_cake.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/android_studio_3._4._1_for_windows.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_off0000dbeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEB 6028 bytes
SHA-256: 84272ae6da1a6353f32a335a06893e7c0d29f2952a0ad13041480f24be355fb3
font_01_sfnt_off0000f06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06B 10692 bytes
SHA-256: 7ec736908339d280c5b4c0a057db0d8693a3ee28d6a6635fbfd4e76382a494f9