Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0dd429370546f0d…

MALICIOUS

PDF

72.2 KB Created: 2021-03-08 20:56:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4d34ed258e6455c34cc8aaf2277af1f8 SHA-1: 38df1e4a491b2f34311e93393ab0264c3d28ed0a SHA-256: a0dd429370546f0da06b3d320f84c628eb76d8ed48bbb13eb89bc2ebd9a3073c
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://midufefew.ru/award?keyword=practical+electrocardiography+pdf PDF link annotation
    • http://tryici.xyz/zisamikavaxesedurexos94hlm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_5fdc8a4c45541.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/karcher_pressure_washer_engine_partsquraj.pdfIn PDF document text
    • https://mewifukemi.weebly.com/uploads/1/3/4/7/134764424/rilidolisodovuxetew.pdfIn PDF document text
    • http://samettemiz.xyz/smurfs_village_cheats_smurfberriesjfay6.pdfIn PDF document text
    • https://voletiga.weebly.com/uploads/1/3/4/5/134501602/puwezaberavi.pdfIn PDF document text
    • http://3bki.ru/66263366431069ws.pdfIn PDF document text
    • http://titanof-filtr.ru/best_kings_questazh2w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409811/normal_602be10cf0209.pdfIn PDF document text
    • http://pankreatitum.ru/the_measure_of_a_man_quotesq03xx.pdfIn PDF document text
    • https://dajadigab.weebly.com/uploads/1/3/2/7/132712332/zatis_zaroze.pdfIn PDF document text
    • http://wuxirumamep.iblogger.org/the_inquisition_summoner_book_two.pdfIn PDF document text
    • https://dodizavezoku.weebly.com/uploads/1/3/1/3/131398251/gifixupax_gokogiwebiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nirobow.epizy.com/82428310772.pdfIn PDF document text
    • http://katilujovuge.rf.gd/experian_credit_score_report_password.pdfIn PDF document text
    • http://kesobikifa.epizy.com/aacomas_transcript_matching_form.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_off0000dba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 5344 bytes
SHA-256: 330a2cc1cb5da83172f75873f9ec941600013db6c188c387eb24736070b0c51e
font_01_sfnt_off0000edd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD1 11840 bytes
SHA-256: 3428d07e9bceba72deee1213a5e7180baaf802b3c274eedf73e354de30ee56b1