Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d64e0a1facdb2c0…

MALICIOUS

PDF

71.8 KB Created: 2021-02-03 04:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3ce81a41031489b3ff42ed951734ae43 SHA-1: e33a1b324670811ba23407b89f05899074f4f718 SHA-256: 3d64e0a1facdb2c023ba8dc7749b9c0575ee5e2aa8c4982a0497c378e898646f
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://druttle.ru/wb?keyword=instalar%20antivirus%20gratis%20para%20tablet%20android PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425913/normal_5feb2a26957ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416332/normal_5fe3da5a67aeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481671/normal_601838a0de560.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/jgWZeje/tidotuvobotixezokidimilam.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/JSgjfqE/free_movies_2020_apk.pdfIn PDF document text
    • http://rubyshup.space/xazenogobixzlh1z.pdfIn PDF document text
    • http://dresdenpharma.ru/amazon_gutschein_online_kaufen_rossmanna27xw.pdfIn PDF document text
    • http://scarcebook.com/bitmapfactory_unable_to_decode_stream_androidojqqz.pdfIn PDF document text
    • http://alfa-quest.ru/dalasemakugapugxzm8y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477629/normal_5ff97cb5d84c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471988/normal_5fcbfd3823f48.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/jgejcRN/pijixepobu.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/firudegix/fusafis.pdfIn PDF document text
    • http://lorenivi.rf.gd/gafenomufid.pdfIn PDF document text
    • http://xevemifura.rf.gd/mixit.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_off0000d9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B4 5264 bytes
SHA-256: 28590a3400e7ae3a1394aa1964f12ab1ef0bccef4a886eebc49af71f5920d34e
font_01_sfnt_off0000eba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA7 11244 bytes
SHA-256: 6fc3119684df548ad99cfcce7893be05e16d16525ed7a190db9044d23a0ed54c