Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e0f273f5fea130…

MALICIOUS

PDF

41.3 KB Created: 2020-10-07 18:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0228c52912c0a7f2bab902b98181a4de SHA-1: e69c0979cc653ccebbf857e27866520964b82cdf SHA-256: 49e0f273f5fea13074daebc97e22c2572d196e2fa8c3f25c2fbedd3db8d7fced
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=middle+adulthood+erikson In PDF document text
    • https://site-1038765.mozfiles.com/files/1038765/jebojomesugetemotez.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/jobipujimasof.pdfIn PDF document text
    • https://site-1037856.mozfiles.com/files/1037856/vorapej.pdfIn PDF document text
    • https://site-1039828.mozfiles.com/files/1039828/53489311238.pdfIn PDF document text
    • https://site-1043329.mozfiles.com/files/1043329/60821702228.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/48152758394.pdfIn PDF document text
    • https://site-1038863.mozfiles.com/files/1038863/palemigixigalufovule.pdfIn PDF document text
    • https://site-1038932.mozfiles.com/files/1038932/18395406177.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/rogejexivafifad.pdfIn PDF document text
    • http://zokiba.heritagebible.us/uploads/1/3/1/0/131070301/8754844.pdfIn PDF document text
    • http://files.ryan-wheaton.com/uploads/1/3/2/6/132683138/sovuginarev.pdfIn PDF document text
    • http://files.winwinsuccess.com/uploads/1/3/2/7/132740545/ragiluxen_jopajalamule.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/14e3f8f7-48d5-417f-8065-5e06dd81da96/13700742302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7d04e4-8772-4ef1-a48c-252726fb57d5/zotif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6efb1268-cc2c-4ae0-8f5e-014843756c6f/58821998321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b907aee4-3bd5-45b0-85e4-604159f3eaa2/luzenabag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e37c4ce7-626e-4784-becd-cf37859d6731/liwevuxugunulomogoda.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_off000063e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 4980 bytes
SHA-256: 23e5dc54eac16c9dfb329e791b9435fa339a9ce9e5252ab73fe3c91d8d1b8595
font_01_sfnt_off000074d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D2 10516 bytes
SHA-256: b02e0b10fbeb6a9847dd50dcda0f54e5d17aace308703f73b7a902e8a611d33c