Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b18678b68bc41c6…

MALICIOUS

PDF

72.1 KB Created: 2021-03-01 02:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 51ecef8fb50581a24ab57a11b6234e2b SHA-1: 855d67dcc2a8cca29aed3ee74c10aab751fd7525 SHA-256: 7b18678b68bc41c61ecdc1866fe20c5d9fae201719e806e4af1137873a51d260
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/wix?keyword=mastering+the+world+of+psychology+textbook+pdf PDF link annotation
    • http://kinorio5.xyz/najuveguxatatofxrbdv.pdfIn PDF document text
    • http://myluckywin.site/netgear_7550_modem_walmartys80q.pdfIn PDF document text
    • https://notususapi.weebly.com/uploads/1/3/4/0/134012365/ea6e218.pdfIn PDF document text
    • http://shtancircul.site/91367042439of1w8.pdfIn PDF document text
    • http://idealslim-ordina.site/52237866718eei68.pdfIn PDF document text
    • https://vopupina.weebly.com/uploads/1/3/1/0/131070761/fepopimemoven_kolupunonawebi_dokokefezi.pdfIn PDF document text
    • http://luchdobro.site/vugotizelasizalegix098x6.pdfIn PDF document text
    • https://rejonogatu.weebly.com/uploads/1/3/5/3/135392998/gokamapitedazikofif.pdfIn PDF document text
    • https://fexaxotira.weebly.com/uploads/1/3/5/4/135401388/2438581.pdfIn PDF document text
    • http://lightstart.xyz/139225256494ylbe.pdfIn PDF document text
    • http://electorat.org/sears_water_softener_instructions6sdte.pdfIn PDF document text
    • http://nunanokipikade.22web.org/my_dehumidifier_is_leaking_water.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/home_remedies_to_help_get_rid_of_a_boil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putagasixebe.epizy.com/good_answer_to_job_interview_questions.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_off0000dc4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4C 5888 bytes
SHA-256: 761b26407207c3c2457f4a592422d54f9e46e7e6b0afd7d45c6238c1f893e8b0
font_01_sfnt_off0000f076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF076 10196 bytes
SHA-256: 93771a4854053dc73080ef8b56baa4bbab2abe3897cbe11a4dfe89e674495a22