Malicious PDF — malware analysis report

Static analysis result for SHA-256 746b76f682c27ee2…

MALICIOUS

PDF

41.1 KB Created: 2020-10-11 00:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f1aceb74371540f68b1689c02603bcf0 SHA-1: 9e61b8ac734766db12b7d024e8b6348bbf1ca9d3 SHA-256: 746b76f682c27ee2bac881d4e867bbc3243db5cc182de879beeee9773036f683
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://cctraff.ru/pify?keyword=graphing+exponential+functions+worksheet+algebra+1+answers In PDF document text
    • http://files.cbweis.com/uploads/1/3/1/4/131407530/xobilow-rageve-zafideninuxob.pdfIn PDF document text
    • http://files.victorylc.com/uploads/1/3/1/6/131636589/radisefana.pdfIn PDF document text
    • http://files.personalcrypto.nl/uploads/1/3/0/7/130739571/xuxagumipipumafiwemi.pdfIn PDF document text
    • http://files.tylermusicacademy.com/uploads/1/3/2/6/132696064/pimojafan.pdfIn PDF document text
    • http://kulaja.cccaec.us/uploads/1/3/2/7/132740478/8cc4572ba.pdfIn PDF document text
    • https://site-1042781.mozfiles.com/files/1042781/fukitugofoforebag.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/8320607994.pdfIn PDF document text
    • https://site-1036924.mozfiles.com/files/1036924/87620477139.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/93a95135-7b47-4834-81cc-b77f3c916b5a/bozubamerupeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21f8ef0f-eb0e-4528-b084-b48fc8426f7a/35693469441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a45dc966-a350-4018-97f7-66a81be922af/88863557227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3b29278-f1a2-42d8-8dd4-4d7a88658883/46441204775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d7e5b72-29c0-473f-a02b-ccb9deebf90f/tinojotopas.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_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5724 bytes
SHA-256: 779833e30c93cf1586f832c37f38fd4a7bbc2423f3c00a866dc044a4ea05d85e
font_01_sfnt_off00007623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 9612 bytes
SHA-256: 55f6f7865a039dea6f822698c59758b4fbe3188bb248bbaad54511ec8589304f

Open this report in the interactive analyzer, or submit your own file for analysis.