Malicious PDF — malware analysis report

Static analysis result for SHA-256 3074691b393dbdd7…

MALICIOUS

PDF

46.6 KB Created: 2020-10-25 11:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 766b756106abd91d7dec92ada21692ee SHA-1: bbff4b5163a2353d78f9daffd7deb135ac35ae09 SHA-256: 3074691b393dbdd7440aec729cb73e8e130bfd0a130047273ff4be52195db0f0
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.club/123?keyword=best+mobile+monitoring+app+for+android In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/xenemavurinap_jokepirewiteda_fijalezej_gemewije.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c12a233-1dfd-4dec-84a5-7e04bd724833/70911354005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebdcd0b-7e9b-4ff6-bb10-375ae0d58fe0/pafoletobutuvigirojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9713d5cc-c075-45b6-9160-5afefde33e5c/tupaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5eed58-570c-4a4e-a182-2d4cd6040cf8/66521416553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4fea18-3904-4a5f-a265-a771dc294f4c/34493829850.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/kexoziz.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/11th_biology_book_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/english_phonics_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/13566893768.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/dell_latitude_7490_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6467/0873/files/hiv_guidelines_2020_zambia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/goodwill_employee_handbook_california.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/86377088695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2978/1416/files/unrealistic_expectations_and_misguided_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/60399304287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23897b49-a294-48dd-95fa-d66409feb284/sukuvijaxogopezotozofomub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237941a0-2664-49dc-acd9-98f62a096cf5/vecino_infernal_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d96cd90-1d4a-4dde-8cdd-66992913231f/43234634464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3930/7948/files/water_supply_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2166/9816/files/17310991463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9467/8435/files/93690269748.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_off000074db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DB 5552 bytes
SHA-256: 43fa33a16058e297a1a1ff745f6b87f37be2847fc7eb7a9764654ed7f4b0d14e
font_01_sfnt_off00008799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8799 10760 bytes
SHA-256: 5443dca358b0edd17f4745f1fc49057b1e9e0b720521ef8dd99c8252850212aa

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