Malicious PDF — malware analysis report

Static analysis result for SHA-256 d589c907f8afd4f4…

MALICIOUS

PDF

66.9 KB Created: 2021-02-15 14:58:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7692a30d03904fa92ac2fb4c640cd112 SHA-1: 97858462add4c78e2759a0a322dee52dd0a23423 SHA-256: d589c907f8afd4f49dc4b9d2755110ca610ae23843c6d607a8dd94d333588bae
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=environmental+issues+worksheet+answers PDF link annotation
    • http://osthondroz.com/free_template_covering_letter_for_cvb6anj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445541/normal_60067f33c0e5e.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/jis1kic/gps_tracking_app_offline_maps_sygic.pdfIn PDF document text
    • http://limons.space/klondike_adventures_cheats_android8peag.pdfIn PDF document text
    • http://nadixonoju.iblogger.org/21430255192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5fe90f6b7fab1.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/idxCjbO/tower_bloons_games.pdfIn PDF document text
    • http://studytogether.fun/worksheet_membaca_anak_tk1tqoz.pdfIn PDF document text
    • https://cdn.sqhk.co/fejukomus/OghlibM/game_dev_tycoon_guide_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421201/normal_600c9d61c61b1.pdfIn PDF document text
    • http://fefogumok.22web.org/tixomelekir.pdfIn PDF document text
    • https://cdn.sqhk.co/tuminageka/d9ibOib/nalubukivonizugepexobis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pamiwumewamem.epizy.com/buffered_vpn_apk_latest.pdfIn PDF document text
    • http://mowesod.epizy.com/misplaced_modifiers_examples_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/nasowivevuxonira.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/58730052822.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/cchca_service_authorization_form.pdfIn PDF document text
    • http://papawipowujujed.rf.gd/1457880237.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_off0000c9a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A5 5096 bytes
SHA-256: 3b2abc9c59bbcfca208df8d6aef7d2e8fbb80eb0ae87a592b1d427749284649d
font_01_sfnt_off0000dadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADD 10452 bytes
SHA-256: 3793d780e71be68fede14cffe34321ed35ca3d3dab0bf3ab71b2f344125c523a