Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d97f67afd1d6daa…

MALICIOUS

PDF

71.7 KB Created: 2021-02-26 18:05:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c8621666a7605ee38e4bebc15ccdb805 SHA-1: ea1aefa062de528e8eac6b6fc3cf91dad329bcf5 SHA-256: 5d97f67afd1d6daaf218c62b4ea461d90d504e7d52e65164a9eda533b884d5bb
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://botokaw.ru/award?keyword=where+is+my+fridge+filter+located PDF link annotation
    • https://cdn.sqhk.co/betewulo/jaMWtoj/jiwokujarivofavokepinob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451755/normal_601c67aacd6dd.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/beats_solo_2_wireless_change_battery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fd7bc5565c16.pdfIn PDF document text
    • http://taher-tcac.com/paradoxical_sajid_2_book_download4tdwf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462059/normal_5fea22686260c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404523/normal_6008a32e08b88.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/kovezux/86495109012.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/icsee_camera_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/95897940080.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/what_is_the_difference_between_modernization_and_westernization.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/noribalavug.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/coway_ap-1512hh_hepa_air_purifier_reviews.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_off0000db84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB84 5548 bytes
SHA-256: d1f43370fa34b1ae529301ce0bcf778297bcee1e75160953e290d61897ecab25
font_01_sfnt_off0000ee4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4F 10488 bytes
SHA-256: 54c1b04303c8354b39d04c5347834da43aadc1d4c2344b735740790194490090