Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6c5ddbaf32d677…

MALICIOUS

PDF

38.1 KB Created: 2020-10-10 22:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 473db31d005fdfad6009a3a8d2e90b7b SHA-1: eb960a768c538fb36390f8052d090c92563f2348 SHA-256: 6e6c5ddbaf32d677be041111914a0c378bbe4c814446ca22cfcfd9f3c8aae00d
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/pify?keyword=community-based+participatory+research+for+health+from+process+to+outcomes In PDF document text
    • http://sojemevek.saritaredalia.com/uploads/1/3/1/0/131070719/xegagevarireto-sejurar-ladoji-xonito.pdfIn PDF document text
    • http://files.huntingforadventure.com/uploads/1/3/0/9/130969633/6782241.pdfIn PDF document text
    • http://putafa.yogamara.org/uploads/1/3/1/0/131070491/1453913.pdfIn PDF document text
    • http://files.gwoodfoundation.com/uploads/1/3/0/8/130873996/ratumejowuzabug.pdfIn PDF document text
    • https://site-1039745.mozfiles.com/files/1039745/koxosudugasor.pdfIn PDF document text
    • https://site-1037883.mozfiles.com/files/1037883/vinetogize.pdfIn PDF document text
    • https://site-1042598.mozfiles.com/files/1042598/89174274382.pdfIn PDF document text
    • https://site-1042821.mozfiles.com/files/1042821/62680900573.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/52693886670.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3564/6357/files/78911241808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/ap_biology_genetics_problems_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9443/2161/files/band_of_beauty_promo_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0136/7709/files/celebrate_recovery_step_6_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/pasta_and_grains_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7446/4160/files/how_to_draw_a_knight_easy.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_off000054d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D9 5576 bytes
SHA-256: 48436ce64db97569fadd42cf57684084d6bf978bcbf57eb33107a3ca794ca07d
font_01_sfnt_off000067a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A6 10532 bytes
SHA-256: 62018a6d4e19f21ca198ce06892104dc509c27c19609f4a341e995a33ff2ad1f