Malicious PDF — malware analysis report

Static analysis result for SHA-256 2632e3f3045b6bea…

MALICIOUS

PDF

49.5 KB Created: 2020-11-01 08:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 0ac24ab8d373fc4a2edfe8c604b53220 SHA-1: 1d7397db465d60bf319f3cdf9bd19aacd6100863 SHA-256: 2632e3f3045b6bea893c8eb2481fd5ad01b33eb14ec3bd3214d2f779f811d23c
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.me/123?keyword=graco+nautilus+65+rear+facing In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417137/normal_5f9b864469533.pdfIn PDF document text
    • https://nurekagenarufab.weebly.com/uploads/1/3/1/6/131636906/60996367dda1e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f99cd0d156ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f9378aad4242.pdfIn PDF document text
    • https://nipefewemaxu.weebly.com/uploads/1/3/4/3/134387654/3eca71c7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f93c26257d5e.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/kawotexulozax/science_olympiad_2019_rules_manual_division_b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/0487/5680/files/59296363175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7841/3214/files/18844550787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d59230fc-09f9-4880-8bb0-58962f5efcf2/leverage_season_5_episode_15.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_off0000810e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810E 5356 bytes
SHA-256: 6b1c8bd1869c86820002b342e69d5355decfb47ba15f391dbb86481af4ef602a
font_01_sfnt_off0000935e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935E 11428 bytes
SHA-256: aa5842301fe12f3b60f65739ab8378480ab6ea18204960ce3c3cb88cb100128d