Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8dd015a5acc209d…

MALICIOUS

PDF

71.6 KB Created: 2021-02-05 08:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 0161f33fac745718298e7d63a64bd239 SHA-1: f61df5c4af368b82960bf1113326d9239c229f8f SHA-256: d8dd015a5acc209d2eedb77b2f08b6e65fe4e40277265ce5d54e9f56beb00629
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/aws?utm_term=alaipayuthey+movie+video+songs++in+1080p PDF link annotation
    • https://cdn.sqhk.co/fafovewidom/CBhcjib/blackpink_magic_twist-_twister_tiles_kpop_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386330/normal_5ffabfa63bbd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494138/normal_5fc5db88be0de.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/9f20QcK/kopokinigofitununip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375887/normal_5fe3afe4f2894.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fed806b304c6.pdfIn PDF document text
    • http://evilcheats.fun/71689973741g7zkb.pdfIn PDF document text
    • https://ripukalogud.weebly.com/uploads/1/3/4/3/134391837/vokadoki.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/benzi_desenate_romanestin3wz7.pdfIn PDF document text
    • http://im-marceting.site/werewolf_the_forsaken_character_creation_guidefes8d.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/ifiegd7/jojekazadex.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/moiiahg/bubble_shooter_apk.pdfIn PDF document text
    • http://gooddevice-online.com/zaliviwei5.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/gfecwhW/17672377471.pdfIn PDF document text
    • http://libralab.digital/xowusk7m89.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_off0000d972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD972 5816 bytes
SHA-256: c73dd488cabc1c0c04ceff466924ed0e94e31ab481d11f8e51aaf17aa6404e94
font_01_sfnt_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 10632 bytes
SHA-256: 3ac167e4c327a0240578ace2caa0fd1e56c57efca8f84a4fa87ef5d11daf96f1