Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be3f57cea85682e…

MALICIOUS

PDF

58.5 KB Created: 2021-02-17 01:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 963949df2a98f07b69132e48c3174d9c SHA-1: 0c4d5a63795f818a8b90037456bc84674bab80ce SHA-256: 3be3f57cea85682eccf62fed310182daeec70c9fb5129317d846a1dd14259c9e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/123?utm_term=2005+honda+accord+service+light PDF link annotation
    • https://cdn.sqhk.co/jevamivuvugi/jdZjbPf/sowukuta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374522/normal_5feea202926b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5fcb6388ce9f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475853/normal_5fd7e5c6699b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_5fd37dfc329ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474223/normal_601fd7ccb1f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484635/normal_5fd7cc90038e5.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/iaMiijc/dimivasevexawe.pdfIn PDF document text
    • http://goldstein.berlin/sunabikudabavirunazo62iz6.pdfIn PDF document text
    • http://opensucre.pro/ableton_live_9_samples_free7rijm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446492/normal_5fd9a4e397e0f.pdfIn PDF document text
    • http://leoidet.xyz/kannada_love_feeling_songs_comem7vpt.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/lijulijowivaze/rational_numbers_venn_diagram_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/65840083779.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/smaller_size_mac.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_off0000ac48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC48 5564 bytes
SHA-256: d5d6625501caef10bd18ac77b1ed7831601030e981afca9d9b9f3d7ea674c332
font_01_sfnt_off0000bf33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF33 8808 bytes
SHA-256: 2ca7eff75244658c04b07c44ccafa52ddb6a7afa178d043e9e60231323cebaf6