Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdbcc1238f17622d…

MALICIOUS

PDF

73.8 KB Created: 2021-02-25 09:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3820d7d31d77f81c6ef78a8fac415ed8 SHA-1: 7308dac01a20a2da4180aa7968db7ccaf14d475a SHA-256: cdbcc1238f17622dbdbe2a39a9aba44b3e32319476d50aa816c5dd646fd7b75e
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://baarspo.ru/aws?utm_term=fudge+a+mania+movie+1995 PDF link annotation
    • https://fojiwuduz.weebly.com/uploads/1/3/5/3/135309278/7567258.pdfIn PDF document text
    • http://zupuvotan.22web.org/67144306318.pdfIn PDF document text
    • http://gitutemove.iblogger.org/lawupurexetamabakisijalok.pdfIn PDF document text
    • http://xegomivuz.iblogger.org/joxaxifirotekatabetoxuwe.pdfIn PDF document text
    • https://sazopugewado.weebly.com/uploads/1/3/1/4/131453094/4486698.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/vozutexulovuvu.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/hjNQ9ge/breaking_bricks_with_ball_game_play_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/DgUibib/fancy_fonts_for_iphones.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/lebejos/96072324371.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/competency_based_interview_answers_building_relationships.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/xedijerikexufovo.pdfIn PDF document text
    • http://pexefenebize.epizy.com/27306917219.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/xulogegadofokobetikunibu.pdfIn PDF document text
    • http://bofatiwatepelu.epizy.com/direct_and_reported_speech_worksheet_year_4.pdfIn PDF document text
    • http://lakiver.epizy.com/chloroformic_acid_propyl_ester.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/zixomukobupikigawux.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/64521444798.pdfIn PDF document text
    • http://xupoguva.rf.gd/android_developer_widget_tutorial.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_off0000e3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AD 5188 bytes
SHA-256: de920a79ed9ee27529f310c6d3514b7d3f151143d365952ce45727e3af438113
font_01_sfnt_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 10984 bytes
SHA-256: 3f96927c1af55912bcefb322d31a16c5c2c3511171245c3e222cf64cce24dfd8