Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a6be0180d5cf7b…

MALICIOUS

PDF

76.2 KB Created: 2021-02-17 20:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6774f6e1676167b2e012673251707817 SHA-1: 7b7e22876a77ef4fbad6f952fbc6ce4d8cbd65f2 SHA-256: 79a6be0180d5cf7bcd44970ae6371fc85827cf9c00cbbf7e6ff015a0a53d24bc
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/aws?utm_term=are+ceramic+heaters+safe+for+babies PDF link annotation
    • https://cdn.sqhk.co/zelagagunogo/hb5pbif/space_engineers_small_fighter_ship.pdfIn PDF document text
    • http://detonic-official.website/essential_english_grammar_and_composition_class_6xqt8c.pdfIn PDF document text
    • http://olipaka.xyz/monster_high_friday_night_frights_god6otw.pdfIn PDF document text
    • https://cdn.sqhk.co/nadokikado/grib3cL/appointment_letter_format_for_school_teacher_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/jgh2Xib/flip_or_flop_new_season_2020_episodes.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/b4Omjen/ditedebeteg.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/ijTt8ji/biwog.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/Z4hayjb/xajizekonuwavumot.pdfIn PDF document text
    • http://varietystore.website/vikatan_magazine_password2j1s3.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/iyqidic/39179832592.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/ibjgM9P/xekezufa.pdfIn PDF document text
    • http://cheatyou.site/whiten_dingy_white_sheetsx9jtd.pdfIn PDF document text
    • http://shortsomfj.space/bodoni_mt_black_free_fontcctxe.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/ehglhfE/478746226.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/liluvad/formation_of_ammonia_covalent_bond.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_off0000ed7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7A 5220 bytes
SHA-256: f6cbdb26caf359472a3e31c952220b38040dd15a87b168bbd98a64cf7a346eef
font_01_sfnt_off0000ff15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF15 10816 bytes
SHA-256: 717116bdbcf1ce27ff6ebc070774c7b6480c641f512554e893c450e8d310bad5