Malicious PDF — malware analysis report

Static analysis result for SHA-256 b330e2f96f7162d0…

MALICIOUS

PDF

70.6 KB Created: 2021-02-09 01:42:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c985e423f860d066ba48c449082a7228 SHA-1: a53f0417f44e88cffba0d6dcd1ed3156e79b22b4 SHA-256: b330e2f96f7162d0a4fb39c8a4b1a2c565f52d3fc8c90713ea5da499bd998e10
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/wb?keyword=media%20player%20classic%20free%20%20softonic PDF link annotation
    • https://cdn.sqhk.co/siloneza/hg4Cgjv/30509814743.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445733/normal_5fdf813dd6bfa.pdfIn PDF document text
    • https://cdn.sqhk.co/xalisufa/s8he7Yh/uc_browser_youtube_video_download_app.pdfIn PDF document text
    • https://cdn.sqhk.co/toxotunem/OjegcAB/jurassic_world_evolution_pc_game_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/litazujizime/a0iiji8/class_9_physics_chapter_1_ncert_exercise_solutions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496607/normal_6021c9351852c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475716/normal_5fe2e3dda2b24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_601ebc6bc5994.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/qjageig/76614844299.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489725/normal_5ff1b64af23d7.pdfIn PDF document text
    • https://cdn.sqhk.co/bipobulif/2Whjs6P/indoor_waterpark_iowa_city.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/kawotexulozax/battle_beast_bastard_son_of_odin.pdfIn PDF document text
    • http://womopemi.epizy.com/antithrombotic_therapy_for_atrial_fibrillation_chest_guidelines.pdfIn PDF document text
    • http://duwimufowewis.epizy.com/actividad_enzimatica_de_la_catalasa.pdfIn PDF document text
    • http://watenumedar.rf.gd/cgegis_form_no_4.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_off0000d904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD904 5256 bytes
SHA-256: 14a780131d72b05769db70790dc713af04666f7f32ecf32a411b7bdb1bb4f02a
font_01_sfnt_off0000eb08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB08 10128 bytes
SHA-256: 3137f2589da0238eb9ae690ba2d3967002bcdfb1aec18577fd194cdd53f8fad6