Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf2b53cb98e9bd7…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 20:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 919901cd4ac40856b551ee8c5b033728 SHA-1: 57e8a99dcf9b6ccf51838fa0adb0eb042b49aff0 SHA-256: aaf2b53cb98e9bd761dc0f6e47152afbb6d82f4eb5b4be474d5eea92bdbb2988
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://lozipotod.ru/award?keyword=what+is+a+passing+edtpa+score+in+ny PDF link annotation
    • https://cdn.sqhk.co/fefamuve/ZlrwghX/merafobux.pdfIn PDF document text
    • https://cdn.sqhk.co/kewixoretuze/jifjeja/car_driving_school_simulator_pc_free_download.pdfIn PDF document text
    • http://tehnopolis.org/43731108642eevf8.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/hiegic7/17470845938.pdfIn PDF document text
    • https://cdn.sqhk.co/kususarefeja/gjihKJM/wekolukapetefeme.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371514/normal_5fed110dc961e.pdfIn PDF document text
    • http://verification-help.business/trail_climb_hack_apk_1._20be144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495843/normal_60250156c1d86.pdfIn PDF document text
    • http://oyuncuxx.com/bike_race_pro_hackso82wl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fcfa5796962f.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/NH7Iuge/luzemebugivinisem.pdfIn PDF document text
    • https://cdn.sqhk.co/sejiragidu/hfAjfxA/35016281654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_602e54f66f766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392220/normal_5ff168d5a194a.pdfIn PDF document text
    • https://cdn.sqhk.co/wemupaxuziv/J6jjOge/petelobajivakade.pdfIn PDF document text
    • http://testvvd.xyz/aashiqui_2_audio_song_naa_songs72bo9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366348/normal_5fef3fe255dfb.pdfIn PDF document text
    • https://cdn.sqhk.co/dusimefosix/egdHjja/lego_ninjago_epic_dragon_battle_speed_build.pdfIn PDF document text
    • https://cdn.sqhk.co/mogilirexexa/giWk0vv/room_escape_contest_2_level_41_losung.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/R5piiid/67575900189.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 5416 bytes
SHA-256: 8f636483e6d332a945e7ed912716937722bf8e03c3f059a3a331027ceeb27e9a
font_01_sfnt_off0000f18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18F 9972 bytes
SHA-256: ed950e3db9aece7f2c1975a38839183c6803e65e9519c798c4573f2a7a761108

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