Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae38c23f7bd1ce70…

MALICIOUS

PDF

72.0 KB Created: 2021-02-16 13:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9ab610d71dca072f7bec8c05d82346f8 SHA-1: 07f60e4114286f319acc672ba0dc1661a9c4d818 SHA-256: ae38c23f7bd1ce702a779d779bb918f609d16f20477487a25fb20d3e469d9ac9
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/wix?keyword=elder+scrolls+blades+apk+mirror In PDF document text
    • http://prodit.space/42223818680r0zd1.pdfIn PDF document text
    • http://kyrgyztours.com/81061669196supr.pdfIn PDF document text
    • http://1xbet-registrat.site/vineland_adaptive_behavior_scales_second_editioned56n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415770/normal_60217130bae63.pdfIn PDF document text
    • http://constructionhouse.info/kugizojunuzosukesogczch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388596/normal_5ff9a96250be0.pdfIn PDF document text
    • http://uchebnoe.website/samsung_level_u_headset_user_manualibz73.pdfIn PDF document text
    • http://geosen.net/les_amides_nomenclatureg9rbz.pdfIn PDF document text
    • http://trikotoria.ru/zetor_5211_service_manualyz141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_600e07875a046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_601405890b9eb.pdfIn PDF document text
    • http://likujamozajowu.22web.org/dsst_general_anthropology_study_guide.pdfIn PDF document text
    • http://kukikifo.iblogger.org/bhairava_movie_free_hd.pdfIn PDF document text
    • http://fringigejy.site/quantitative_methods_for_business_david_r_andersonjkufh.pdfIn PDF document text
    • http://bitsracing.net/noropbyrr8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://susugafof.epizy.com/liqui_moly_ceratec_manual_transmission.pdfIn PDF document text
    • http://banugigo.epizy.com/atiku_abubakar_photo.pdfIn PDF document text
    • http://susugafof.epizy.com/19832661211.pdfIn PDF document text
    • http://vobununebufipu.rf.gd/60263334768.pdfIn PDF document text
    • http://revuzulikasulo.epizy.com/vtech_phone_manual_cs6929-_3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9F 4984 bytes
SHA-256: 1a4e8c7f0995b3aa0535f0b7c71917f823b242a8cecdeca3541a9bfcf02c173e
font_01_sfnt_off0000e07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07A 10664 bytes
SHA-256: baeda2e589bb97ebed085df2fada60ea5c5fe3fe15e78c12dd47c72ca8de0e32
font_02_sfnt_off000104ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3