Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cdb4030961fcee…

MALICIOUS

PDF

75.6 KB Created: 2021-02-15 21:04:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d9f8fa39712ee99a2b205dc9aceffa2e SHA-1: fcec1f4c6519146f3f272a88a3e1746d4f8f73d9 SHA-256: a9cdb4030961fcee7ee8db3fe097511d1bdfdcb347d239ec5474a07e5fb5fd77
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wb?keyword=conde%20de%20montecristo%20pelicula%201975 PDF link annotation
    • https://cdn.sqhk.co/pajerelo/jcjdLXo/russian_car_simulator_zil_130_mod_apk.pdfIn PDF document text
    • http://jazeforip.22web.org/46531272151.pdfIn PDF document text
    • https://cdn.sqhk.co/tejurorado/hafQdPf/pony_princess_academy_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/MxThcjf/spades_rules_for_3_players.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387711/normal_5fe2d9177b7b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462379/normal_5fe61c2617062.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/divexikav/mixed_integers_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/dejevefawovirilenolamola.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/29296090474.pdfIn PDF document text
    • http://muzokusadozejog.epizy.com/gabofivekipixutiperire.pdfIn PDF document text
    • http://guxajofiv.epizy.com/cultural_identity_worksheet_answers.pdfIn PDF document text
    • http://fuvituze.epizy.com/formation_of_anilinium_ion.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/handbells_christmas_music_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/antistress_mod_apk_full.pdfIn PDF document text
    • http://vebipijofozit.rf.gd/daru_badnaam_video_song_wapking.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_off0000e69c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69C 5536 bytes
SHA-256: 1acf1972924badfc9b85d6e8c54fbb466409a63449ec1183155d91ef59a050aa
font_01_sfnt_off0000f95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95E 11788 bytes
SHA-256: 6f80011d2e9a6fc2309a56804a4bb91806c32a28a7ca9d44a2532c1c8c14fcf2