Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2c6fad199b8e02…

MALICIOUS

PDF

63.7 KB Created: 2021-02-24 00:23:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1b138322d0243ed8b8b4cee25ec672be SHA-1: a67431cbfd998038af143326291008059db20eff SHA-256: 7f2c6fad199b8e02bf5c4b96a6bdeedb624cb122a1d510c5aa1e0148c25b27c4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=constant+velocity+worksheet+3+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377936/normal_6030385ddbf06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_5fe632a35352a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472788/normal_6007b105d0a19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483365/normal_5fc8aa116c9b6.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/tjfw1jb/54703759005.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/ioZihge/honor_of_kings_be_a_king_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/ek1sNmf/centurylink_business_email_support.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486221/normal_5fd2cfee7ed8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421062/normal_5ff25b9222cfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426974/normal_6027da560fbda.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/jaWvfS1/wowitomarezoluke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381546/normal_602f1204764a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366014/normal_5fe48a0e21700.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_6019adfdeb5ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_5fcf329e09661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378157/normal_6021434d18a48.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/hgoxPig/boxing_star_game_guardian.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418970/normal_5ff0b381384a0.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_off0000beaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEAA 5276 bytes
SHA-256: b3c9da122dec16c9780c3b49466e31cd12bdc78f5e7d293bd1a2ff57fa156cb7
font_01_sfnt_off0000d0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AC 9796 bytes
SHA-256: 9b56446b67b31b173e49a9e890b52997c54fbe5e2cff3bb928f8a66a8f0a1a70