Malicious PDF — malware analysis report

Static analysis result for SHA-256 59948a3116a3bcb7…

MALICIOUS

PDF

52.9 KB Created: 2020-10-27 18:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 478e3084927386497b169f373c50ca5b SHA-1: 41225fd38c06ccc813795ff2f7d2d4be072bbc26 SHA-256: 59948a3116a3bcb7cddc7864b6bc32f82f061a71fdf041345bd009c47fcd3aa6
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.link/pify?keyword=city+of+ember+activities+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f8707aaf187b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f87566dacbbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401697/normal_5f9632f7ddc10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_5f8a4656ebe6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008259.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008259.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000b7c2.bin)
    • https://cdn.shopify.com/s/files/1/0500/9988/0099/files/handbook_of_angioplasty_and_stenting_procedures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1392/9630/files/advanced_image_search_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/8568/4632/files/security_fundamentals_professional_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0298/9208/files/jezepov.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/23864707323.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/bahaya_merokok_bagi_pelajar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0eea231-fc18-41cb-b198-5a2b9baac94f/marilyn_manson_nobodies_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24807858-091a-4407-acbd-59ce309de8ed/zawejolerunoveli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0912/9629/files/tawane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/9010/9097/files/colorectal_cancer_nccn_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5834/6167/files/soft_matter_physics_doi_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/password_app_for_android_and_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9465/8206/files/falling_from_grace_2020_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5979/3057/files/meijer_birthday_cake_cookies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4135/5454/files/best_offline_android_games_with_high_graphics.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 extracted file (font_00_sfnt_off00008259.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8259 5276 bytes
SHA-256: 4fb34ce8daea7461e7509777b44d27e90b4f2aaf3552e1e174c51dc8f1bb91a1
font_01_sfnt_off00009459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9459 10352 bytes
SHA-256: c4bf3e7490f7a1a5b350ded6bce249e1fad948b33ec7e3b75b1f4eb61ca6181c
font_02_sfnt_off0000b7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333