Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da32c50ee698c3f…

MALICIOUS

PDF

69.4 KB Created: 2021-02-28 11:29:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed4442ba804e693e95cb5dc4ba533f40 SHA-1: f49683f0b82e32033953f3691d94aef6f4f5bdae SHA-256: 6da32c50ee698c3f98e01fd6d7a6a4ff97dc81fd6d23050a9fccabbf7c027f58
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=sony+handycam+pj410+user+manual PDF link annotation
    • https://nogulakotu.weebly.com/uploads/1/3/0/9/130969216/7a4430.pdfIn PDF document text
    • https://cdn.sqhk.co/zubejavaxuvu/8bgjjiz/nes_emulator_game_files_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_5fe722aaee02e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449973/normal_5fee623f8f8e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375356/normal_5ff8d3b873670.pdfIn PDF document text
    • https://bilemupu.weebly.com/uploads/1/3/4/6/134654663/ponagetawup.pdfIn PDF document text
    • https://cdn.sqhk.co/lisupixiwe/gdjh1jd/bullet_force_multiplayer_controls.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/agjhdgj/space_invaders_atari_2600_gameplay.pdfIn PDF document text
    • https://bulejoge.weebly.com/uploads/1/3/0/7/130775594/jagakim.pdfIn PDF document text
    • http://kagaromorin.medianewsonline.com/palella_y_martins_._metodologa_de_la_investigacin_cuantitativa.pdfIn PDF document text
    • https://cdn.sqhk.co/toviranevu/haUWnd1/fukubazosobo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_60325e32b7367.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/satedafadusizo/samarasimha_reddy_movie_audio_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/78616190250.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/android_checkbox_color_of_checkmark.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_off0000d149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD149 5876 bytes
SHA-256: 4f368ed65266e98a8e0beab553bd491a63a7f1d32aaf8a75730a3c731c14ecbc
font_01_sfnt_off0000e538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE538 10392 bytes
SHA-256: 9d9cca669246382d94a539c8bc977312e12ff82599be1b9af0918ce038d77afe