Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ce53279a9f9c5d…

MALICIOUS

PDF

76.0 KB Created: 2021-02-13 17:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a5f93c24ef0a11efbc3fd2e688956ad9 SHA-1: 8de08866f6f3b3dbf56d2e8953b8e6b0ec5c6509 SHA-256: 38ce53279a9f9c5d55fedaa12b2e10f254c87c20315d68d77890ffcf8e8c5298
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=male+reproductive+system+worksheet+key PDF link annotation
    • https://telidububiz.weebly.com/uploads/1/3/1/4/131452987/wufox-nujovebew.pdfIn PDF document text
    • http://rodsfish.club/south_africa_a_modern_history_davenportpft78.pdfIn PDF document text
    • http://drilltech.info/events_tonight_in_san_antoniovq2dl.pdfIn PDF document text
    • http://vostokzapad.su/types_of_triangles_ks2_worksheetqe1yf.pdfIn PDF document text
    • https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/3150600.pdfIn PDF document text
    • http://vamoktin.ru/best_to_word_converter_online_nitro6woy9.pdfIn PDF document text
    • http://jibiduseg.22web.org/udemy_android_application.pdfIn PDF document text
    • https://cdn.sqhk.co/fenogate/jhjgSx2/sakura_school_simulator_ios_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wunokebewoz/MGjbie1/crazy_racing_for_java.pdfIn PDF document text
    • http://help-business-media.com/kgbv_guidelines_2018-_190q7j2.pdfIn PDF document text
    • http://domavera.ru/47445855307ty065.pdfIn PDF document text
    • http://zzzmmmmejjj.space/eland_oil_and_gas_annual_report7a310.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tifilumiteva.epizy.com/30647386107.pdfIn PDF document text
    • http://vapedefomagejev.epizy.com/aptoide_free_for_iphone.pdfIn PDF document text
    • http://wevevaviz.epizy.com/businessman_2_tamil_full_movie.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_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 5636 bytes
SHA-256: 5b787203479d804694d30d4eaf39db063cec0c0ab790118beb6d78155e4b7541
font_01_sfnt_off0001008f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1008F 10136 bytes
SHA-256: 54ee2d7c229a04175926f23d925f7bc83ac738f41f5b4f6be5c6735ed19ea3e5