Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6f2cc639bb665d…

MALICIOUS

PDF

45.5 KB Created: 2020-11-03 05:22:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 45fcfaec84d5d50990a4c72ff7888af8 SHA-1: 5ae6ebeae0b1835d0036c8eb9c775bf325776fd6 SHA-256: fa6f2cc639bb665d4b61b11400101efbd11f1a06587e4da9e2a2e162a50f29cb
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.cc/123?keyword=isle+of+kortos+pathfinder In PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/lakadax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5f9dfb7eafd76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f87de2cbd006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f891e2d5523a.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/fasanag/99650337572.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/evaluation_of_functions_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/spider_man_homecoming_123_movies_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/hyena_guney_kore_sinemasi.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/genetic_algorithm_nptel.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/mujubunijetemame.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/para_que_sirve_el_bicarbonato_de_sodio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7536/2198/files/febufakopodezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9554/6273/files/58312822535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2881/4273/files/burrito_bison_unblocked_at_school.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_off000072df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72DF 5128 bytes
SHA-256: 4edbd6d3dee1aec6297243b5477ac635260f849b69bd9562dfc2730a89bd1611
font_01_sfnt_off0000844a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844A 10964 bytes
SHA-256: 2c01f0036f4c7afa08db579f06b5d33518ddfc07d0991e09819570f492b5a590