Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84498078457d1c9…

MALICIOUS

PDF

69.2 KB Created: 2021-02-15 07:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8ddb37cb6a94308aef036bd3301454e9 SHA-1: 1985762ef85001d1dfb1e8d42107b573cf73f8d4 SHA-256: e84498078457d1c92c0cbc47d91f0fdf5ca9d2b3f3b5e27c90a81369668d812a
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/wix?keyword=sink+or+float+worksheet+4th+grade PDF link annotation
    • http://nopisodozig.66ghz.com/l_film_song.pdfIn PDF document text
    • http://detonic-buy.website/tax_analyst_interview_questions_and_answers9obwq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366652/normal_5ff56cdf3a111.pdfIn PDF document text
    • http://itverys.space/ana_anticuerpos_antinuclearesarzfl.pdfIn PDF document text
    • https://guwuviwanawa.weebly.com/uploads/1/3/2/6/132695801/5715714.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422918/normal_60069c4c8beab.pdfIn PDF document text
    • https://gajabalavira.weebly.com/uploads/1/3/5/3/135347595/zonozemet-xaxoxiduwejuge-sudepovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377912/normal_601e583ea9062.pdfIn PDF document text
    • http://merishwheelrecords.com/best_quality_camera_app_downloadprn69.pdfIn PDF document text
    • https://sujoxiwu.weebly.com/uploads/1/3/4/8/134879933/4388253.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458145/normal_6006e224efbd5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://perotufusutukes.epizy.com/minnie_mouse_sheet_face_mask.pdfIn PDF document text
    • http://zobatokuvanoz.epizy.com/club_penguin_mission_answers_9.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_off0000d194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD194 5516 bytes
SHA-256: c4452c06872c7d8dc4615c5d6ebda71f6e3887c0fbc5c2603a0e12a868bfc8a8
font_01_sfnt_off0000e469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE469 10352 bytes
SHA-256: 0241e42e4e12e6651b97c7c6d5ce34ba2122a9f89efdf52fb823c73ec899db7f