Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee8a3bcef95ded7…

MALICIOUS

PDF

72.1 KB Created: 2021-02-12 04:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0fcddfb5a7a94514929f00e0bd3ca899 SHA-1: d6e9d2952373e2370d0bc4b749158564b83c7d3d SHA-256: 1ee8a3bcef95ded7fc04545feab10e65b2632aa5388f9351a10ed482b628a1d3
184 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
  • 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.
  • 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/wix?keyword=apush+unit+4+exam+answers In PDF document text
    • http://brumbum6.xyz/achieve3000_answers_the_marvelous_st34wfb.pdfIn PDF document text
    • http://verifedform.com/handel_hallelujah_sheet_music_pianoiwfj7.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/ggepjhn/41044295153.pdfIn PDF document text
    • http://makamar.xyz/4545589042302hi4.pdfIn PDF document text
    • http://circulyarkadigital.xyz/bucklers_mead_school_uniform61ux3.pdfIn PDF document text
    • https://cdn.sqhk.co/japexexuko/ia566ij/4578302045.pdfIn PDF document text
    • http://clobuss.ru/919940385311htga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373239/normal_5feefcd516176.pdfIn PDF document text
    • http://madewithsunshine.com/causas_y_consecuencias_de_la_reforma27zku.pdfIn PDF document text
    • http://snail-case.store/bbq_party_menu_templateva1fx.pdfIn PDF document text
    • https://cdn.sqhk.co/mewedenemez/sOGhi6J/smilodon_rampage_2.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/ghzMGhf/papimufotuwokiji.pdfIn PDF document text
    • https://cdn.sqhk.co/kesusevuzep/EghgiHb/money_origami_heart_with_wings.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499629/normal_5fc72a4001d22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462096/normal_5feb1945760cb.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/fukepez/71069229887.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/69916464722.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/border_designs_for_school_project_free.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_off0000debf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBF 5264 bytes
SHA-256: 7d53c8ee7bfe174407314aff8193ef265936eefbf7ba032a2f6a3036b02b1db0
font_01_sfnt_off0000f092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF092 10184 bytes
SHA-256: fed54f3550775c4b689cb1321e738f2b314001bed29a2d0d39887fb89a5cc7c8