Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db1edd162d24951…

MALICIOUS

PDF

71.6 KB Created: 2021-02-15 06:55:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 257b2c55c3d136445d23a90181a24079 SHA-1: f6e38d54969f3acb07b04a3bc6e9d067efb74f37 SHA-256: 2db1edd162d24951acb21590bd6929df32c63d4a8c44f876e22cb186e865336a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=5-2+practice+direct+variation+worksheet PDF link annotation
    • https://cdn.sqhk.co/foroboreb/gfOosMy/mortal_kombat_xl_ps4_moves.pdfIn PDF document text
    • http://tiktoktop.design/quadratic_inequalities_worksheet_answer_key5x9du.pdfIn PDF document text
    • https://bakijunida.weebly.com/uploads/1/3/2/6/132695635/170f0a57cbcbf8.pdfIn PDF document text
    • http://jelexak.iblogger.org/38103328769.pdfIn PDF document text
    • https://futilupotozuvat.weebly.com/uploads/1/3/1/4/131454482/novazowanoke.pdfIn PDF document text
    • http://realwockyc.info/37212092809oqwwx.pdfIn PDF document text
    • http://fusizexa.22web.org/baseball_score_sheet_template.pdfIn PDF document text
    • https://cdn.sqhk.co/sezabaxo/iijtgij/island_beach_state_park_hours_2020.pdfIn PDF document text
    • http://mnatural.space/861829963361tff9.pdfIn PDF document text
    • https://mumunemifuber.weebly.com/uploads/1/3/1/4/131406104/8248002.pdfIn PDF document text
    • http://detonicufficiale.website/6135017247gw8ps.pdfIn PDF document text
    • http://mekikapuleka.22web.org/vubux.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/qVgdQhc/95409171471.pdfIn PDF document text
    • http://metunobe.22web.org/sequence_number_sheet.pdfIn PDF document text
    • http://winoraama.fun/912855812960bhr8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zopefunexot.epizy.com/os_coliformes_totais_e_termotolerantes.pdfIn PDF document text
    • http://jezanijumoz.epizy.com/nox_player_android_emulator_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5B 5328 bytes
SHA-256: e0a371c26f8c127b040b7cc25c83ba2e378e519099c410d7435f29b350891366
font_01_sfnt_off0000de7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7E 10612 bytes
SHA-256: f825d47f6b44173b6d5197280bf825cca42e7cabf69f5267af4bfad2eb9adb22
font_02_sfnt_off000102b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34