Malicious PDF — malware analysis report

Static analysis result for SHA-256 9977797e75808847…

MALICIOUS

PDF

38.1 KB Created: 2020-10-07 09:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4627fa36faeb2772d2ec18680d3d7368 SHA-1: 31f95c61dcf6031e4f40b8dc3ce4e9ea13823679 SHA-256: 9977797e7580884701593ababa6da535f12bf6e2c0ed9195e8112aaa6297e70a
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=terrarium+tv+pro+apk+for+android In PDF document text
    • https://site-1039545.mozfiles.com/files/1039545/5579113077.pdfIn PDF document text
    • https://site-1039924.mozfiles.com/files/1039924/72279547845.pdfIn PDF document text
    • https://site-1038431.mozfiles.com/files/1038431/53254907346.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/39274416878.pdfIn PDF document text
    • https://site-1038943.mozfiles.com/files/1038943/41756026300.pdfIn PDF document text
    • https://site-1036759.mozfiles.com/files/1036759/jezuwevefudugid.pdfIn PDF document text
    • https://site-1036759.mozfiles.com/files/1036759/73796271155.pdfIn PDF document text
    • https://site-1036850.mozfiles.com/files/1036850/65909607641.pdfIn PDF document text
    • https://site-1048535.mozfiles.com/files/1048535/tedodekinutobosi.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/jisorogu.pdfIn PDF document text
    • http://xuxudujej.shupik.com/uploads/1/3/2/6/132682892/lufofukumomataz_gufasug_lovaz_sawik.pdfIn PDF document text
    • http://files.camco-stores.com/uploads/1/3/2/7/132740670/wavusatawexob_tosotawib_joxarulumub_poporefariw.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_off000058eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58EB 5052 bytes
SHA-256: 256b94ab94bf9f23553c3bceb25ec60726d45cf5232107b432af2f5291fc552c
font_01_sfnt_off00006a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A10 9888 bytes
SHA-256: cc663af056882c16cf7a889533d66a18855d6e2d6462e49eb9bffd2fff8eddc4