Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b72917e14d905e…

MALICIOUS

PDF

71.6 KB Created: 2021-02-20 14:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7576b97813f14041ef719620afb1aecc SHA-1: ebbc1867aee2ab9ef1315cd4b7cd75438a0e45fe SHA-256: e1b72917e14d905e40894800d1479b54cfdaa16c7cad13d4d87da5886f37a1af
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=granblue+fantasy+skill+level+guide In PDF document text
    • http://sungo1.space/badeduliduwubarujavinike9bvop.pdfIn PDF document text
    • http://dopelozaf.22web.org/ibooks_author_templates.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/3d_pool_game_for_pc_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497082/normal_5fe827e3d6635.pdfIn PDF document text
    • http://qlemelest.online/ffxiv_arcanist_leveling_guide_2019b09ng.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377125/normal_5fe0260c7db0a.pdfIn PDF document text
    • http://ryduslim.website/les_choristes_sheet_musickkx0m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451929/normal_6004b6b395a78.pdfIn PDF document text
    • http://jigitozunawada.66ghz.com/60386189790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470040/normal_602a4c990dd6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5feb94e25e6ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471275/normal_6019105f5b622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botuwosolu.rf.gd/clarinet_concerto_mozart_sheet_music.pdfIn PDF document text
    • http://nedomawof.rf.gd/cube_of_binomials_examples_with_answers.pdfIn PDF document text
    • http://sanejiwobar.epizy.com/biralofuselu.pdfIn PDF document text
    • http://jokubizipapazor.epizy.com/youreporter_maltempo_nevicata.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_off0000da83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA83 5472 bytes
SHA-256: 0b47581082a02514b9311ea9dc73e659da8e01b566b58614bc40fabbefc0e199
font_01_sfnt_off0000ed3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3E 10472 bytes
SHA-256: 115deccb96b38875837ff634759a40570c65c6f3fc83fc3585047dd45f006d52