Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adf6b47dd1385bd…

MALICIOUS

PDF

40.4 KB Created: 2020-11-06 14:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5a564d3d549b0831e673ff69af197444 SHA-1: 9d3b1381762b700f889f170104743b4a18f8feef SHA-256: 7adf6b47dd1385bd7af0df7e6ae2d5c25d822c3a649ee92d7dad476eac31cfff
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/123?keyword=tuesdays+with+morrie+quotes+with+page+numbers PDF link annotation
    • https://xapabareduvan.weebly.com/uploads/1/3/4/3/134395213/3271493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378381/normal_5f8a53c42e5e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408713/normal_5f9e4fdf04ce0.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/fe6578dfaa1e2d4.pdfIn PDF document text
    • https://woralolur.weebly.com/uploads/1/3/4/3/134359953/7bfb8.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/7783514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393035/normal_5f934c583a941.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/jezobasit/94088544222.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/the_autonomous_power_of_the_state.pdfIn PDF document text
    • https://s3.amazonaws.com/sanekufiwumafo/farmville_2_cheats_2018.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_off00005e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 5752 bytes
SHA-256: 25e1c1f120d97fb648fee1501fed4193de027e70c6591c0a57c31925df65d874
font_01_sfnt_off000071c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C9 10356 bytes
SHA-256: ab179d66d8e5b14ae280a863d2eecac7265bf6b1ada67ea47164043a23c92863

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