Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec85a30f5ca99577…

MALICIOUS

PDF

73.1 KB Created: 2021-02-10 17:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6e2ff7509b3d0623a1b974789024e6c6 SHA-1: e8bb58bdbe6698a46bd01fca49545201fa10a00a SHA-256: ec85a30f5ca99577dd87426b908ff5bae779c944af9afcbb8c0145db7e741290
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://druttle.ru/wb?keyword=laser%20welding%20stainless%20steel%20sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5fe8acf9a69e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_6018d7a441a69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5fce4cfcefd67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501660/normal_601a581713339.pdfIn PDF document text
    • https://cdn.sqhk.co/lisupixiwe/iijKib7/27325357663.pdfIn PDF document text
    • http://copyright-securityx.com/87131275653xcv4y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390681/normal_600761b3cff29.pdfIn PDF document text
    • http://optarfes.com/schwinn_bike_trailer_stroller_conversion_kitdr9mg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453764/normal_5fdac6aa4af0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408475/normal_5ff4b33e36dc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394068/normal_6002718449644.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/ijgjDdu/rutesuwexotipojulijegoxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445550/normal_5fe42272c12a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366645/normal_60047846a640a.pdfIn PDF document text
    • http://xtrading.buzz/datidexetowizubup6wi7t.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_off0000e273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE273 5120 bytes
SHA-256: 8c42d3230a54e898337ac34d50bdda6fc3974ceacda5c876f6bebaf83798a26e
font_01_sfnt_off0000f3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E7 10580 bytes
SHA-256: 0ab6f7ce967c270b6487877db855c31a10599de031958ffbef02ed9548b6e014