Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6f4c4372ec44b9…

MALICIOUS

PDF

40.1 KB Created: 2020-10-03 18:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2c6968c3d9a3e0d41c73a13a9f34f3a8 SHA-1: 68b87e081da1244096cf2e0cbd9d9b2049e9c84d SHA-256: 5f6f4c4372ec44b9bbde8178a2f296670f240c852a604153efe3c04890e918b0
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=leo+play+card In PDF document text
    • http://files.industriallandscapes.org/uploads/1/3/0/7/130776460/5cd5263.pdfIn PDF document text
    • http://fulikomid.livingjustforhisglory.com/uploads/1/3/0/7/130739344/pagosababomiw-wexomokute-wonamipov.pdfIn PDF document text
    • http://kojulize.sammysdogwalking.com/uploads/1/3/1/8/131856476/5dec24a2.pdfIn PDF document text
    • https://site-1038614.mozfiles.com/files/1038614/32120736552.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/zowejadepukubokorufokuf.pdfIn PDF document text
    • https://site-1040780.mozfiles.com/files/1040780/63950701046.pdfIn PDF document text
    • https://site-1039576.mozfiles.com/files/1039576/tudajasuwale.pdfIn PDF document text
    • https://site-1037113.mozfiles.com/files/1037113/88146752461.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/18974166052.pdfIn PDF document text
    • https://site-1039390.mozfiles.com/files/1039390/68635316694.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/6aab49c8-7c7d-4866-9170-a98452f9bd37/57076996450.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6662dfe6-fa00-4da1-9a22-b967f4e41e5b/30379503716.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_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 4932 bytes
SHA-256: ef752c4c44ac25b78a91b179ab73a653e5195f272a96a99b11ebb24319c77da2
font_01_sfnt_off0000714c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714C 10232 bytes
SHA-256: 55704d2c0173023d6bf8ced00cacb09903dd7eed1e7b79a2af368e2787d21345