Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded9e5c2a89437bb…

MALICIOUS

PDF

73.5 KB Created: 2021-01-30 03:49:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6d283f945be2b886d5eb4ddf175c37eb SHA-1: 71b8baf3f767d0f48f96012590489d021be950e4 SHA-256: ded9e5c2a89437bb1afc5f11ce49623613c723479c7d9ced54fe339f4a74421e
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yafferge.ru/wb?keyword=magic%20background%20eraser%20pro%20apk In PDF document text
    • http://raftgjgr.space/bad_boys_girl_blair_holden_wattpaz2vtp.pdfIn PDF document text
    • http://zupubovogigu.iblogger.org/approval_email_template.pdfIn PDF document text
    • https://gawuwusirijer.weebly.com/uploads/1/3/4/1/134108670/magadidib-jumuzonoro-liwigogifiwu.pdfIn PDF document text
    • http://present-mag.ru/osmosis_potato_experiment4fxl5.pdfIn PDF document text
    • http://jofijuke.22web.org/discussion_paper_guidelines.pdfIn PDF document text
    • https://peziwotikiju.weebly.com/uploads/1/3/4/6/134602895/bedapumatawux.pdfIn PDF document text
    • http://torevifij.iblogger.org/michelin_guide_uk_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/Wgi9Xpr/cute_pony_hair_salon_game_pony_careers.pdfIn PDF document text
    • http://setifol.66ghz.com/writing_a_good_hypothesis_worksheet.pdfIn PDF document text
    • https://pexigupor.weebly.com/uploads/1/3/4/9/134901766/b5e70b0.pdfIn PDF document text
    • http://wopivobozas.66ghz.com/identifying_biotic_and_abiotic_factors_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/ibdKZjh/mirakebemuxebesuwevib.pdfIn PDF document text
    • http://maxonona.22web.org/american_psychological_association_guidelines_for_undergraduate_education.pdfIn PDF document text
    • https://mitojebani.weebly.com/uploads/1/3/2/7/132711961/1798661.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feliruxitekul.epizy.com/divesix.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_off0000decf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECF 5416 bytes
SHA-256: 7a7e2669d33a8666b75dc144de3ddb6d9ad4b309d50f563d5b32710bb4444e61
font_01_sfnt_off0000f158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF158 12112 bytes
SHA-256: d00f095e100b394196048ab111309a23c3661abf17f433a7bbc9cc2f85c53dd3