Malicious PDF — malware analysis report

Static analysis result for SHA-256 73c49cc65853576c…

MALICIOUS

PDF

41.1 KB Created: 2020-10-31 00:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7d0cd072ae55750f0671c0466e26e7ba SHA-1: 26c06538dfee37718cc5fcf74697f902045c59fe SHA-256: 73c49cc65853576cdd0c24f9962dba35b5851ec6902eb539bee5ded73938a337
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.link/pify?keyword=survivor+2020+turkiye In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f965c7e51cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369313/normal_5f9adb63c5379.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f91d4641029b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387713/normal_5f9a667d38f10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8cc5e91597b.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f1f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f1f.bin)
    • https://s3.amazonaws.com/tiluwisulepam/logica_aristteles.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/tapuj.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/a_beautiful_mind_reflection_questions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/adobe_reader_apk_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/18384268688.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/conceptos_capitalismo.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/captain_marvel_comic_book.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/36197863277.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/copernican_revolution.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 extracted file (font_00_sfnt_off00005f1f.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1F 4864 bytes
SHA-256: 236bbb257c31093784e2b4763fa2751a1d47a78b581bbe16b566421431965d9c
font_01_sfnt_off00006fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD3 12880 bytes
SHA-256: 18ef377503927fd0c5f30a981ea898afa2d4c31ce7b6b066e9e58092c2e2299e

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