Malicious PDF — malware analysis report

Static analysis result for SHA-256 55198d614f5439cd…

MALICIOUS

PDF

73.1 KB Created: 2021-02-16 01:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 02e57e50dcf14056f8e1688ae57db09c SHA-1: db3cdaeb8d80e78228a9815ce36febdf7c415b11 SHA-256: 55198d614f5439cdada6317b18f45593a18f8d2b74c07cad66ecf259b386ccec
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=the+crossover+basketball+rules+pdf PDF link annotation
    • https://cdn.sqhk.co/pubisifibuj/hhizhcU/human_fall_flat_game_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481830/normal_600078f46ef26.pdfIn PDF document text
    • http://zexawil.22web.org/zunuxudowexuxixeruseraw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481273/normal_5fe653fb35f1c.pdfIn PDF document text
    • https://cdn.sqhk.co/bafuberudod/h7ihd2q/potemajoduritovipomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_60247644bac62.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/g05jcMk/stickpage_infiltrating_the_airship_apk_download.pdfIn PDF document text
    • http://gusanod.22web.org/viwukolidegimufop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidigoxe.rf.gd/how_to_interpret_mbti_results.pdfIn PDF document text
    • http://medesawawolujim.epizy.com/rutinivajumiwigexomiwepof.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/capital_letters_and_full_stops_worksheets_tes.pdfIn PDF document text
    • http://gefutikavuza.epizy.com/components_of_genetic_variation.pdfIn PDF document text
    • http://lexireto.epizy.com/zoology_12th_practical_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/what_is_the_price_of_smart_watch_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/28476384196.pdfIn PDF document text
    • http://zerodawoti.rf.gd/lab_experiment_report_sample.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_off0000e1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 5456 bytes
SHA-256: 5e4ac9c9d3477126356c61e455100b874c94b0d988fdcbf221c59562d4a67383
font_01_sfnt_off0000f480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF480 10300 bytes
SHA-256: 9cb189246df14be278c1521b17feb37aeccdc73eba7117caab1e21e179c74ef5