Malicious PDF — malware analysis report

Static analysis result for SHA-256 625696d799af7406…

MALICIOUS

PDF

38.4 KB Created: 2020-10-08 21:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 713898254002e84a9de87f35b2a8c460 SHA-1: 5c368e5fd633f1709f94c8f345cb2ae35a2aad3a SHA-256: 625696d799af74062d03d1a3b54f09cea5c56937899fa910d1e1d41aa2626d47
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=glucose+and+iodine+solution+mixed In PDF document text
    • http://files.crawdaddyforge.net/uploads/1/3/0/9/130970015/2b824a62d366a.pdfIn PDF document text
    • http://files.tarjetasyregalosmolonas.com/uploads/1/3/0/7/130739116/3734485.pdfIn PDF document text
    • http://fozuk.patriksoderstam.com/uploads/1/3/1/4/131483249/63962d83eb669c0.pdfIn PDF document text
    • http://famiguzif.bundleitsg.com/uploads/1/3/1/4/131407014/rokudafuli_tedavolonibinam.pdfIn PDF document text
    • https://site-1042101.mozfiles.com/files/1042101/11135675515.pdfIn PDF document text
    • https://site-1039187.mozfiles.com/files/1039187/pokilurasuvetedodagerafo.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/1/0438/1917/2002/files/end_rhyme_definition_in_your_own_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/253f6aa5-4eeb-4f3b-a09f-bfa7315e1aef/rubakifumopunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/983c337a-f830-4a5d-90c6-c901c0b5d6d2/46154673151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/548ca3e4-a951-494d-b0b3-67ce7ef9cf30/51100750041.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_off00005a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A90 5088 bytes
SHA-256: ea637cf837cb3d35f5e01e6632284ebccd6e917f9aaed4df10c4b64835072574
font_01_sfnt_off00006bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD5 9668 bytes
SHA-256: c66fc8f8e7ba7cbb4235b9ae623d09f1374f8103213d9285578ef3896f8fd0e6