Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf76d71972172eee…

MALICIOUS

PDF

70.5 KB Created: 2021-02-16 17:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 052b4faf2f75021d4efb708569596e98 SHA-1: d780a93cd28c8ca24235449c52fe08d3aa4c5eee SHA-256: bf76d71972172eee322f95ffdba5c841f8ba373f9af4b718d8be65086d3a864a
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://maypoin.ru/wix?keyword=the+success+principles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420034/normal_60208d833b8b7.pdfIn PDF document text
    • http://zamividiwido.22web.org/tejavasufetanax.pdfIn PDF document text
    • http://mutinujevax.22web.org/biometria_hematica_valores_normales.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_5fe9126b4a055.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/Oiaxwgg/teacher_assessment_apps_for_ipad.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/jegerowapiz.pdfIn PDF document text
    • http://itawegan.space/bafizeba3lk11.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/wivufuwezov-rumifutepesos.pdfIn PDF document text
    • http://parhelifrl.space/solomon_s_keep_guidem1wgl.pdfIn PDF document text
    • https://burodepizojeke.weebly.com/uploads/1/3/2/6/132696233/5d04aa026f.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/gi0ijjj/87636078844.pdfIn PDF document text
    • https://lidovoji.weebly.com/uploads/1/3/4/3/134313359/a0133.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374840/normal_5fc8ed557bb94.pdfIn PDF document text
    • https://lobusuzagoti.weebly.com/uploads/1/3/4/4/134470260/380229.pdfIn PDF document text
    • https://xebuzoxovekig.weebly.com/uploads/1/3/4/0/134018553/3261657.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozonijegexovu.epizy.com/wamovubitodum.pdfIn PDF document text
    • http://rifobotulaw.rf.gd/jefolil.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_off0000d947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD947 4760 bytes
SHA-256: 508215011d59528d0c3e91140b78ce1bd111b66a43912674aa8d68d004f53393
font_01_sfnt_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 10424 bytes
SHA-256: 18a3298202ff30b3b55d0e55f8264d7c43d927bc604e035c984f3e625c3d4864