Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c82a80c3c787f00…

MALICIOUS

PDF

72.1 KB Created: 2021-02-25 08:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 53912580d49a199ed840acc1b040c287 SHA-1: 8fc993ace46948b181939d4d44122227b077385a SHA-256: 3c82a80c3c787f003eaad9e8f692dd3ae86c404b57237958ba4b2c3347368bfe
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=gba+mod+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379855/normal_5fd06c566a80f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463264/normal_602dd3af9a72a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421352/normal_600e9e9c0eb0c.pdfIn PDF document text
    • https://tovejuzu.weebly.com/uploads/1/3/5/3/135398771/sowazim-jofaku.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/84112041607.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/arduino_programming_reference.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459794/normal_5fe5da3d6c91e.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/igWdghs/bmobile_trinidad_phones.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474222/normal_5fed4a7c3f2f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476270/normal_5fd64da674ee4.pdfIn PDF document text
    • http://nanejitinitepe.iblogger.org/principles_of_heat_and_mass_transfer_7th_ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nimobavaze.epizy.com/writing_task_2_sample_answers.pdfIn PDF document text
    • http://pimeduzuruwoboj.rf.gd/jipemimebaxutama.pdfIn PDF document text
    • http://foxorefo.epizy.com/reported_speech_with_gerund_and_infinitive_violet.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_off0000dcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC4 5160 bytes
SHA-256: 95128df933ca6ba1931b3b46837b5c055b9580d7a0a9e12f156ab6d4dfa5fe9b
font_01_sfnt_off0000ee53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE53 10588 bytes
SHA-256: 1e77a500de93041b04d94716ac3d80504039c0e9215db8dd7475e4da9d95594b