Malicious PDF — malware analysis report

Static analysis result for SHA-256 f141651f2ceec710…

MALICIOUS

PDF

77.3 KB Created: 2021-02-26 21:09:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9fe1c651e6c9cd2be06601766e02d7df SHA-1: fe4a88fdcd1abc8761f46b81a5469df314bea905 SHA-256: f141651f2ceec710bf56b028feb96bf1cb5368306255da5ffb9833d15771aaeb
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://jacksth.ru/award?keyword=english+contract+law+cases+pdf PDF link annotation
    • https://cdn.sqhk.co/befozaxulot/p8vgcid/3d_puzzle_disney_castle.pdfIn PDF document text
    • https://cdn.sqhk.co/javijaxim/ighbKih/29404397187.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/idhi97T/bivipixoda.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/qgcgiij/blank_snakes_and_ladders_template_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/jcBT2hg/pigigifiv.pdfIn PDF document text
    • http://spainsale.pro/what_does_4_short_beeps_mean_on_a_computer0yolj.pdfIn PDF document text
    • https://cdn.sqhk.co/dejijadu/c0jhhO5/48952723612.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/c9ymhh8/timaloralemozepes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_5fee86ecdb5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_6021c406a5f5a.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/dokebemuvu.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/jhdiepP/begomubonibanukemefis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405195/normal_5fecf582832ea.pdfIn PDF document text
    • https://cdn.sqhk.co/mufipofunup/f2Vlxig/84128724822.pdfIn PDF document text
    • https://cdn.sqhk.co/mewoveri/jjhhbW7/pocket_rally_lite_mod_apk_home.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CE 5464 bytes
SHA-256: 616f9cc40b24d2ea74c45295a50581cf88b23f43807cf7cf18a30c5ed46ab0b8
font_01_sfnt_off0000f77e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77E 15284 bytes
SHA-256: 4116c5fe37fd5f4ee87112c3192879a8dc1d35eed89335caca7d54bb82c97b8d