Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80c1a4a1af6f55f…

MALICIOUS

PDF

44.5 KB Created: 2020-10-02 06:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fe9f74cc418a596f2267fb9b4a08e2af SHA-1: f24ac4305b5858c39b100a60307fa9d98bb8d891 SHA-256: d80c1a4a1af6f55f27ef6af2a936378754bc0ee5617c37ba6c42a6ee8f775bd9
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=spotify+mod+premium+versi+lama In PDF document text
    • https://site-1038605.mozfiles.com/files/1038605/90039961202.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/vupozub.pdfIn PDF document text
    • https://site-1036991.mozfiles.com/files/1036991/jijiwodigipunivoraduti.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/50102683498.pdfIn PDF document text
    • http://geliwa.lacenguyen.com/uploads/1/3/1/4/131438539/e0bb2e5231.pdfIn PDF document text
    • http://files.tewari.org/uploads/1/3/0/8/130874361/ripumofojebizuj-takoku-fetamipog.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/wozeduwekofel.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/60782423022.pdfIn PDF document text
    • https://site-1038798.mozfiles.com/files/1038798/65349339167.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/6fd3d126-66c8-4a82-8e0e-93e83cfd2d90/wipodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3d2478-7d90-42f0-bc53-29404f91a344/puxajuwomamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c18197b-f06a-4bd2-ab97-5b0e7884a285/26537818471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1c2397-a941-45a6-a014-57cc73b9d03b/98018102742.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_off00006fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 5452 bytes
SHA-256: 996dc5759716c062d9621f95f228d2415a00bb1b2c5e080b4ec7f5dcb5b658e5
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 10312 bytes
SHA-256: 7990df03f47bfc8106426635dd77b519620cb6dad1276390f2a9297869ddcdee

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