Malicious PDF — malware analysis report

Static analysis result for SHA-256 09008a93a55fb557…

MALICIOUS

PDF

60.7 KB Created: 2020-10-05 22:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 161e468ef970b047f87b832950c08f9a SHA-1: f0a2f1765719c9e1a4c09f705fb23082bbcaeea1 SHA-256: 09008a93a55fb557a2a2f81956982f0b3c8a9b19f01586005e30b79d5adab8fc
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://gettraff.ru/strik?keyword=manifestacion+de+la+voluntad+expresa+y+tacita In PDF document text
    • https://site-1038490.mozfiles.com/files/1038490/41054629920.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/sadete.pdfIn PDF document text
    • https://site-1038477.mozfiles.com/files/1038477/15595108305.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/84855110.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/ginomamer.pdfIn PDF document text
    • https://site-1036909.mozfiles.com/files/1036909/sagil.pdfIn PDF document text
    • http://dajado.learntarotcards.com/uploads/1/3/0/8/130873930/021f9d85.pdfIn PDF document text
    • http://ginigomi.emmatomlinsonmusic.com/uploads/1/3/0/8/130874474/vefarijowes-bibox-nonab-rawadema.pdfIn PDF document text
    • http://files.patrickmfay.com/uploads/1/3/2/3/132302764/3801249.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/c87690d4-6969-40d4-a3d5-42fa3aac45f9/37025061848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/700c8f78-081a-4d94-a2f8-487b4dda7094/92771723247.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_off0000acb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACB1 5384 bytes
SHA-256: 5bd7733e60d0f025a8098356a65597d53dee9c29041d596705536633fd070118
font_01_sfnt_off0000bf32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF32 11472 bytes
SHA-256: d94581966c35cdcc2b981935a1bd6e535e574ef261d33e2aed15b37b51efed7e