Malicious PDF — malware analysis report

Static analysis result for SHA-256 659f7f6f0f1706a4…

MALICIOUS

PDF

64.4 KB Created: 2021-02-27 14:14:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bce71a9c38027375b8721240dff4d9e3 SHA-1: 0d7ebe4870caa8d906029d30338ff2d108785ddc SHA-256: 659f7f6f0f1706a478ec7ecde8210e3537a8186db4d673a64dbab580a40998e7
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/wix?keyword=faber+piano+adventures+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377115/normal_5fed7bde556ce.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/Ulhbjha/nanireren.pdfIn PDF document text
    • http://poopo.ru/julakemapegavered0cx1.pdfIn PDF document text
    • http://smartbright.club/60464095109as32l.pdfIn PDF document text
    • http://katipef.medianewsonline.com/the_ransom_of_red_chief_worksheet_answers.pdfIn PDF document text
    • http://twenty-promo2020.ru/45096542409w03yz.pdfIn PDF document text
    • https://cdn.sqhk.co/dirodivive/6KtgfTH/shipwreck_grill_menu_bryan.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/vicks_humidifier_filter_walmart.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/zedilegol/99166309291.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/sapuwibituvene.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/how_to_read_dmarc_failure_report.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/rosiluniditonomuxedu.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/58629598780.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/dobotizepepisor.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_off0000c1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A7 5284 bytes
SHA-256: 02c53f87dfd4d6be525973f7d99a097131a58dcf5d705852ae9570c8d9399b78
font_01_sfnt_off0000d3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BF 9712 bytes
SHA-256: 81d7b8e7c4409a4b596cc30d086ee29774c6caea10960c2a3ce7336e7ba2e1ed