Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f560ab803f697da…

MALICIOUS

PDF

71.9 KB Created: 2021-02-28 09:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 15f6fa6331f121f5dfbcb018b348bdda SHA-1: 0b1113c9342ac9d9dec0af80424053c630734793 SHA-256: 4f560ab803f697da081aae72920cbd327de52d74042ab43f07cba9026a3530d8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=mixture+and+solution+free+worksheets PDF link annotation
    • https://xanerenidijuv.weebly.com/uploads/1/3/0/7/130739333/6686312.pdfIn PDF document text
    • http://community-day.ru/what_is_grade_level_equivalentpyrpx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_603062d76ebe5.pdfIn PDF document text
    • https://kelurefuvaw.weebly.com/uploads/1/3/0/9/130969237/68f5b499f93fd5b.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/common_core_math_problem_solving_4th_grademe96v.pdfIn PDF document text
    • https://cdn.sqhk.co/bojowagawire/jajihfL/39763706257.pdfIn PDF document text
    • https://wutaleba.weebly.com/uploads/1/3/5/3/135390467/fewiwadoso.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/41jfc1q/giwapone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420434/normal_5fc57da638a4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366359/normal_5ffa040699c26.pdfIn PDF document text
    • https://tezefidusipenu.weebly.com/uploads/1/3/1/8/131857758/1700702.pdfIn PDF document text
    • https://lovelutunaguj.weebly.com/uploads/1/3/4/7/134735325/zobusoweratapa.pdfIn PDF document text
    • https://venatijaw.weebly.com/uploads/1/3/4/6/134680547/985898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcb9fc05d760.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/cwYBKX6/redirob.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxibila/13jhJie/56147945988.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/fodose/lorosetarewarupegevide.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/solving_exponential_inequalities_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/jelowupekofaxetufizosije.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_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 5224 bytes
SHA-256: 2ac5ab1540566b60e9cc1dce4bab84bdde23faa8227102efb636228bcba5e7dd
font_01_sfnt_off0000eff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF7 10148 bytes
SHA-256: 57f5dbbd45679476b0987a349aac2ced1b19cddd31bc493410c472c3602b87f0