Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b753efca9b9a48f…

MALICIOUS

PDF

72.9 KB Created: 2021-02-25 16:37:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bea5e2d92402d169a92fc6adef89e2e1 SHA-1: 25dea0fbda934892cc4efc81cb241af965785f7e SHA-256: 9b753efca9b9a48fac127706fbbe28e5b69cfb0d22b90440d1415cb4f8ebae49
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://jacksth.ru/award?keyword=catalina+30+mkii+owners+manual PDF link annotation
    • http://spencermcman.us/puripiva9baq7.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/jd2zjf7/caribbean_cruise_deals_november_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dupetodim/khahmgY/flights_to_las_vegas_from_dallas.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/Lege2hf/snake_io_game_secret_codes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376087/normal_5fefb47a49bb4.pdfIn PDF document text
    • http://nosinoski.shop/22618545181t1e3b.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/b2mhejc/zidewoxokekovilepodita.pdfIn PDF document text
    • https://cdn.sqhk.co/pixukinoma/rheghhh/run_3_unblocked_games_77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412583/normal_60280eb24a9bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426810/normal_5fec28c614cea.pdfIn PDF document text
    • https://cdn.sqhk.co/nubavojek/cmLJCgh/fakanitalirimawiwoxazileb.pdfIn PDF document text
    • http://livecopyrightverification.com/exercices_sur_ladn_support_de_linformation_gntique0gzn4.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/EEovjhe/84066757689.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/kodipopujufipig/wekedojed.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/urban_lads_kannada_album_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/faktor_pendorong_urbanisasi.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/smith_io_goggle_lens_guide.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_off0000df04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 5200 bytes
SHA-256: 513fb4daa1f2ec8c05746ae1735fa4917e7e35fa97720268bebadc71f11710d3
font_01_sfnt_off0000f0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A6 11108 bytes
SHA-256: 6b58aee5caf2464cdbf10f05bdb3d82ab76434de56c3710eb81f4d734d31ca78