Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1848d4266e891bf…

MALICIOUS

PDF

45.3 KB Created: 2020-10-10 17:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 78e583f8d24441af6c8a45156e5a8c04 SHA-1: de77ab1e668d6eb751ccd0998a7a29d39720f7c5 SHA-256: b1848d4266e891bf5f36bfbf0bf73fb9ea6648af65ef66fcd7458fd41ab3ecdf
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=honeywell+hfd-120-q+manual In PDF document text
    • http://files.qplusfocus.com/uploads/1/3/1/3/131379041/5f8c4d1e15.pdfIn PDF document text
    • http://wizono.gosynthetic.ca/uploads/1/3/0/8/130874583/09630a1bb2221.pdfIn PDF document text
    • http://files.juliemaeseele.com/uploads/1/3/1/3/131384335/davakiza.pdfIn PDF document text
    • https://site-1039494.mozfiles.com/files/1039494/votulix.pdfIn PDF document text
    • https://site-1039932.mozfiles.com/files/1039932/63500489774.pdfIn PDF document text
    • https://site-1048479.mozfiles.com/files/1048479/9026696429.pdfIn PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/tefezemujusuziwanogew.pdfIn PDF document text
    • https://site-1036830.mozfiles.com/files/1036830/70717171531.pdfIn PDF document text
    • https://site-1042587.mozfiles.com/files/1042587/vekutubarujageg.pdfIn PDF document text
    • https://site-1043095.mozfiles.com/files/1043095/86383546598.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/wofogofefadolududosiseraw.pdfIn PDF document text
    • https://site-1043910.mozfiles.com/files/1043910/27181605010.pdfIn PDF document text
    • https://site-1036876.mozfiles.com/files/1036876/xopewunegareweromuwuxi.pdfIn PDF document text
    • https://site-1039895.mozfiles.com/files/1039895/67886508706.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000071ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 5512 bytes
SHA-256: 5663075f3e14c03954bbbd3e0ce2a209754a66b72aee4241a4796f7442874f30
font_01_sfnt_off000084a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A4 10524 bytes
SHA-256: e7591d6d6a3f1b82d13c825dd749c5c0ec4020d9fc4a2cdd291a5c35d3d6f30c

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