Malicious PDF — malware analysis report

Static analysis result for SHA-256 097ce0d256190b13…

MALICIOUS

PDF

43.1 KB Created: 2020-10-01 00:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f856c553e2a27cec551b9f15b9dc2106 SHA-1: a8a4f36bb3d9a87faab6147eecaab61c9e71fe4e SHA-256: 097ce0d256190b1302299659b37cfcc3749fcbdab9285e70ab412900386f77e7
132 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/strik?keyword=nafta+certificate+of+origin+canada+pdf In PDF document text
    • https://site-1036651.mozfiles.com/files/1036651/fosujijuzeligexureduwe.pdfIn PDF document text
    • https://site-1037193.mozfiles.com/files/1037193/90929459107.pdfIn PDF document text
    • https://site-1039330.mozfiles.com/files/1039330/nigurudutowokoduw.pdfIn PDF document text
    • https://site-1036871.mozfiles.com/files/1036871/puzabobinebaxewomenerako.pdfIn PDF document text
    • https://site-1038520.mozfiles.com/files/1038520/20639466109.pdfIn PDF document text
    • https://site-1039332.mozfiles.com/files/1039332/vazolutupoveg.pdfIn PDF document text
    • https://site-1037114.mozfiles.com/files/1037114/4755000915.pdfIn PDF document text
    • https://site-1038715.mozfiles.com/files/1038715/88422419424.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/nolugosunugu.pdfIn PDF document text
    • http://gozuvij.codeblackatl.com/uploads/1/3/1/4/131454207/1025487.pdfIn PDF document text
    • http://files.heartfulsoul.com/uploads/1/3/1/4/131437683/noxadafunavew.pdfIn PDF document text
    • http://files.selarascipta.com/uploads/1/3/0/7/130775370/4722b7990f74.pdfIn PDF document text
    • http://files.denniscosta.com/uploads/1/3/1/4/131453989/dc1a65d622.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/712f3189-7ec2-4c66-ba2b-3f7825e34599/27265521187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c641c3-ecc8-4ef1-af3b-b3cda35bc4b1/rewegirozijamowimasilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3282a687-8e39-4b0b-b1b6-3be24ad79562/wagamidodakaxota.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_off00006a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 5080 bytes
SHA-256: 052d89423e53e673b6a8befe8057c6beada5dc8d05f586f38a2054f37364e8fd
font_01_sfnt_off00007bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 10344 bytes
SHA-256: 1f64b56b5c2b1ac889d9befe9e371ae85458442832918d4abdee557892c825c0

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