Malicious PDF — malware analysis report

Static analysis result for SHA-256 47df256c3d07c211…

MALICIOUS

PDF

36.6 KB Created: 2020-10-07 09:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 366eae12039531b6dfc280eb53f40b04 SHA-1: 75f141b5280775dda753b47e2a5275e4f38fcb95 SHA-256: 47df256c3d07c211138bdfc55ba0123f2b073144a879360619c47913fcec163c
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://ttraff.link/pify?keyword=solamente+una+vez+ame+en+la+vida In PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/jabupovajamided.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/tadidafe.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/vizefutatawogovaw.pdfIn PDF document text
    • http://fikek.douxoverdesign.com/uploads/1/3/2/3/132302868/1856062.pdfIn PDF document text
    • http://files.emboldenfestival.com/uploads/1/3/0/9/130969204/8240892.pdfIn PDF document text
    • http://neroka.womansclubofspringlake.org/uploads/1/3/0/8/130874218/266f4c31d566a1.pdfIn PDF document text
    • http://files.fyfeart.com/uploads/1/3/1/0/131070911/soxajuxote_paxik_fibul_lafalowem.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/59338226-e5a4-4187-a5d0-e30e9d364d7e/fivesanofidinomefupojomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40e8bb12-366e-4bb8-80ec-3502e4a26530/7178037279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa320267-1744-4864-9ba9-71c4f3ace122/49827387129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69e047c4-4aa6-4e5c-be71-ca03094af9ca/71521547001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/tinejis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0604/2527/files/25075330262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/61430284968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1786/5886/files/gerber_answer_fast_xl.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_off00004ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE7 4912 bytes
SHA-256: e048a771f35eb6c58e5065f6a734319111a36cd89e9a4bc3f9ad676a8b612a27
font_01_sfnt_off00005f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F99 11412 bytes
SHA-256: ebe7c60a7f12a24721b8ea5c8cc3e2c9f90d2ce62e93891a43328b8f5f10d74d

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