Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dfd76984cc1e311…

MALICIOUS

PDF

71.8 KB Created: 2021-02-20 18:40:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5ee71e5e231c155c3043e57447ce9d78 SHA-1: d393addc9af9fe63e08f8afddf26770837cc725f SHA-256: 5dfd76984cc1e311fbefa33819ed5735b055ba5cb89d5cc4e792059e1702053d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=the+park+trophy+guide In PDF document text
    • https://cdn.sqhk.co/vovewotutal/lJ8Rbjc/ballet_classes_for_adults_miami.pdfIn PDF document text
    • http://ladidoxa.iblogger.org/50275926171.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/hjEKid6/police_scanners_for_sale_near_me.pdfIn PDF document text
    • http://nebetejetagume.iblogger.org/distressed_debt_hedge_fund_performance.pdfIn PDF document text
    • http://vclean-sale.shop/18605762817s3mur.pdfIn PDF document text
    • http://uspeh.icu/nanolemifahr10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_600339935571a.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/oxford_placement_test_listening_answersogrxa.pdfIn PDF document text
    • http://phrensy.co/best_android_wifi_booster_2018f17n7.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/gekLhcx/fozimagexepox.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/jiijjie/movie_quiz_ultimate_level_2.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/gf9mngd/disney_princess_magical_dress_up_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/EjejgS2/fastest_cars_under_25k_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE98 5128 bytes
SHA-256: 71c2cd557b0dfec7ab38abfec4437152eab5426f185eb5514736d4281d12e3f2
font_01_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 10136 bytes
SHA-256: d635b29ed42017784954b51930a5ff1b4281df49ff174b3c5a4ba7115b6cb6f8