Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8530847bc60bf72…

MALICIOUS

PDF

71.7 KB Created: 2021-02-24 07:38:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 76a395683438aef8f6025549696f6513 SHA-1: d8f41979c86e7f4ddec6f670de20ce6f6a7c4fbd SHA-256: c8530847bc60bf7217c2f52461d04a77df9d1fcbdd1559884fdc2bca2ee9c1ae
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://jacksth.ru/wix?keyword=bruce+lee+training+book+pdf PDF link annotation
    • http://taygerr.com/the_science_of_mind_management_by_swami_mukundananda_reviewcmw04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484118/normal_6015ebbef0d7b.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/L5iigjN/pokemon_showdown_teams_disappeared.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/Erjcifi/tesisejimaguzabisos.pdfIn PDF document text
    • https://cdn.sqhk.co/gifexajed/hjhxTRm/hamster_cages_wooden.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/oLjcStS/39530413064.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/egcggV8/ikea_brimnes_nightstand_assembly.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458623/normal_600204950014a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450249/normal_5fe10092949ee.pdfIn PDF document text
    • http://vavoferidedodif.66ghz.com/xasijisarise.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/mojivikapeti/wordpress_template_responsive.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/javuridejizuxudobejevivem.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/lugidedakekikufaluka.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/85941736248.pdfIn PDF document text
    • http://mukenoveran.rf.gd/16946636865.pdfIn PDF document text
    • http://xinapigakumise.epizy.com/mcgraw_hill_math_6th_grade_answers.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_off0000dc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC21 5400 bytes
SHA-256: 95fa33482150da9b5920117e2bf7bf2c299e7ede7b8c8ec00d5ca615a7627456
font_01_sfnt_off0000ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 10304 bytes
SHA-256: 2a00b76c3dc33ab09864a81a28ee64990c6447358ce0c213042c204584e39024