Malicious PDF — malware analysis report

Static analysis result for SHA-256 153cd53af8762e7f…

MALICIOUS

PDF

72.7 KB Created: 2021-02-04 20:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2bf800b6329c58a6c0521ab587d7163e SHA-1: c92658cf1c9a125f7d0b8394400c7a06552a6ee9 SHA-256: 153cd53af8762e7f4402a071e26bd38c1b8f56f7786b92c015b5d26de7034705
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://seumenha.ru/wb?keyword=dwarvish%20translation%20guide%20stardew%20valley PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415080/normal_5fdebd92cc886.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5fc8b3abe3e96.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/51201.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/vazemasexaborixiwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386595/normal_5fde7dc8e93ab.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/mjcmti6/lududifupafisiled.pdfIn PDF document text
    • http://eliyalte.com/hovercraft_battle_arena_wikize590.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ff7831fa6e4e.pdfIn PDF document text
    • https://buxijabis.weebly.com/uploads/1/3/5/3/135329720/zikadiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_600f811527f62.pdfIn PDF document text
    • http://idealica-ordina.site/halo_custom_edition_product_key_generator165bf.pdfIn PDF document text
    • https://pulijapejupexeb.weebly.com/uploads/1/3/4/0/134041872/3435651.pdfIn PDF document text
    • http://lalashoppen.online/50189261591rv47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505102/normal_5fdf950b12023.pdfIn PDF document text
    • https://radogatibemif.weebly.com/uploads/1/3/2/8/132815767/259f7.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_off0000dcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 5340 bytes
SHA-256: b1f22a71c839cdc52a739702e9b2cf0845b04acbf68316e1572df65aaa567f59
font_01_sfnt_off0000ef22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF22 10900 bytes
SHA-256: af9d29df39ffe29def6ecd58d507066e6e2f1884a9ad6711db1ed6fb187c4c22