Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b68eadb098be9e…

MALICIOUS

PDF

39.8 KB Created: 2020-10-07 23:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 537021bf7fc70387543d3e7ee3dd33d7 SHA-1: 15fe2a33e2af0530945f01fa1708cefcc48592d6 SHA-256: d3b68eadb098be9e60d10017631c4986801a1f00231d9a0bfde72e0cf30bd161
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=raw+theme+song+legendary In PDF document text
    • http://jebejun.therobertabadydogfoodcoltd.com/uploads/1/3/0/7/130776485/e401c0459.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1428/3176/files/5e_artisan_tools_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/pc_breakdown_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/89141841506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3023/1712/files/the_howard_oshkosh_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1338/5635/files/ffxiv_uwu_unlock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/zajazimupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db53109b-fe08-45a7-a61d-9da44d77062d/lubat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee91b71d-4c48-469c-9f80-33da2e1a5ea5/letimatatubujufojujix.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_off00005cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB1 5440 bytes
SHA-256: 24e70625a9928d29e7b817336608a5f809e23653baa1e593821710c342123250
font_01_sfnt_off00006f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1F 10572 bytes
SHA-256: 2b8c998845fe45103de44287bef80de42ffffee020f3df1056e6b398e52626eb