Malicious PDF — malware analysis report

Static analysis result for SHA-256 3689969068fddafb…

MALICIOUS

PDF

59.5 KB Created: 2020-10-30 14:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 11582da1d2543c443ee0543399fb0997 SHA-1: 4a978f46a22654323dd91a350956071a87798d8d SHA-256: 3689969068fddafb8cd52568959483827b87d7b0b45ce0207b9951ffc196f7f9
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.me/123?keyword=briggs+and+stratton+push+mower+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371812/normal_5f907e829664e.pdfIn PDF document text
    • https://lusukukupesakub.weebly.com/uploads/1/3/0/8/130815137/6ea94d94db3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368492/normal_5f9640aea9f4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5f8f89923930c.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8c5301c761c.pdfIn PDF document text
    • https://panirosarukiza.weebly.com/uploads/1/3/4/1/134132539/4947071.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/zuxadol/vajurupubopipal.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/62474380919.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/38151042960.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/7181295180.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/clinician_s_thesaurus_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6278/7748/files/clostridium_perfringens_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8945/files/goodenough_harris_drawing_test_interpretation.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/776388941.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_off0000a940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA940 5480 bytes
SHA-256: 1eeb5cc1ad4aa9b85b560ec2dd28a93c0634925774e8c5da9201ae79beb5a190
font_01_sfnt_off0000bbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD0 10856 bytes
SHA-256: 5789a4101c3dc04e5a9a42468e561c03adcc05b12f5c7d92b2fceb057c91230a