Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6534f18ec7e212…

MALICIOUS

PDF

42.5 KB Created: 2020-11-09 06:56:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: eea58bcbdb91a941ff3f61239c0badc3 SHA-1: e2f4e438c3b68eb1b5f6490e381e6e66591b4352 SHA-256: 5e6534f18ec7e212e60daeed275800156a4c20040c94ee78b0d768c64c404dcc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=honeywell+thermostat+instruction+manual+6000 PDF link annotation
    • https://mufuxavezefajox.weebly.com/uploads/1/3/4/4/134497947/e9e0e4ff7a.pdfIn PDF document text
    • https://radopubida.weebly.com/uploads/1/3/4/6/134608457/gimunifopagon-gixubad.pdfIn PDF document text
    • https://pexazunawilaga.weebly.com/uploads/1/3/4/2/134265520/6588907.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazofi/sadlier_vocab_workshop_level_d_unit_5_answers.pdfIn PDF document text
    • https://godafap.files.wordpress.com/2020/11/dakuzitiz.pdfIn PDF document text
    • https://tidunawek.files.wordpress.com/2020/11/88556529465.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/stick_fighting_games_2_player_unblocked.pdfIn PDF document text
    • https://nibilapababu.files.wordpress.com/2020/11/rikoxezewajigufiwenu.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/fewabomiduzujagak.pdfIn PDF document text
    • https://monirasuwa.files.wordpress.com/2020/11/80801372726.pdfIn PDF document text
    • https://ditelilaz.files.wordpress.com/2020/11/zozawul.pdfIn PDF document text
    • https://zulomilo.files.wordpress.com/2020/11/44121789914.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_off0000685f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 5488 bytes
SHA-256: d061666c5453bbfb869b8b47ff40df77591599a79304c99b6433ce6667391e8e
font_01_sfnt_off00007ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE7 10076 bytes
SHA-256: 569c5e8bad0dbe297132a9d1b8fb63aa6e33dbff21e601d13ad776e148b746e5