Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffee51c059ea0458…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 11:38:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7556cffd67226882fdbf262ff9033bbe SHA-1: fb67e5d660bc251f117f269a27144e7c3980a29d SHA-256: ffee51c059ea0458029f50700d9282be1f62ecd5919060e783ce8898d9e9eb49
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/wix?keyword=superfighters+unblocked+full+screen+4ever PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369332/normal_5fec2e9a9b335.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/3hgN1c8/jadadiboxadadifos.pdfIn PDF document text
    • http://kalavar.xyz/reading_the_world_ideas_that_matter3wx38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471236/normal_5fede90c33a0d.pdfIn PDF document text
    • http://intereriia.com/65665429682tqoeo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378830/normal_60050950ea9c9.pdfIn PDF document text
    • https://cdn.sqhk.co/rirerujel/haSgigl/top_1000_nursery_rhymes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384045/normal_5feba9503b23d.pdfIn PDF document text
    • http://vitalia-transports.com/putajifirepasofosemuvk0zcs.pdfIn PDF document text
    • http://teaitalis.space/b1_file_manager_and_archiver_apk23po7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370089/normal_6002b50506794.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449990/normal_5fc6a966677fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kanulojijuk.rf.gd/carpenters_sing_sheet_music.pdfIn PDF document text
    • http://vizepojuduw.rf.gd/tigafunewemixi.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/great_addington_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/national_simultaneous_earthquake_drill_2019_narrative_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/splatter_brushes_for_photoshop_cs6_free.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_off0000dacf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACF 5660 bytes
SHA-256: 64393be15b857f857d92cec60e9ca58fdd250c0903b814343e739c0483c0a1e0
font_01_sfnt_off0000ee15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE15 9948 bytes
SHA-256: 6ae7c5ab65f62348b00b70a3e77a423a7262afa7e634b0f1b822813ed46d6d7c