Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d3cb10ee7d6042…

MALICIOUS

PDF

47.5 KB Created: 2020-11-06 16:19:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: ce287b75286d427640a8e17d9b290eff SHA-1: 3d1757ce0a8d464b0a048c92b1a2586fae29bbba SHA-256: 95d3cb10ee7d6042e857cfa38125211f683c63bdafce102efc96c04158cb812f
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/aws?keyword=oblivion+guide+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f9abb8578f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5fa2d08d7a98e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f98df6f50864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8e9de075269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f9efc6311ef9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382413/normal_5f8bc1aaed4e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/tilageko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7362987-0f68-4e72-be91-d10fce68eb8d/9995007021.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/vemodesatetewugopejenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed7dee8-8303-498c-be27-c317a5e0a4cc/67350515505.pdfIn PDF document text
    • https://jikuboji.files.wordpress.com/2020/11/bosibixival.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_off00007b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B39 5036 bytes
SHA-256: 77dc46086eedcd305515d9ff804e3841683c79f8174e19853764dfcf3ca7bca9
font_01_sfnt_off00008c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C84 10852 bytes
SHA-256: f705289edf4c6a0dda835500a471994ba6addf8eceb9ac1aeb7779118056d585