Malicious PDF — malware analysis report

Static analysis result for SHA-256 55eaa7296b56ea5b…

MALICIOUS

PDF

72.2 KB Created: 2021-03-06 21:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ab5aae5f1c79791070cf0d612486666e SHA-1: 0be4bc5a6b4616bbbd06c42086fbb45002dff073 SHA-256: 55eaa7296b56ea5b0cd5ba316237f35e56254d18381292d38095f474bc7d1b1e
126 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
  • 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://botokaw.ru/wix?keyword=understanding+reinforcement+schedules+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413978/normal_5fe9e1f6e5b6b.pdfIn PDF document text
    • http://tujukesabegakom.mygamesonline.org/does_my_head_look_big_in_this_analysis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365601/normal_5fce97bf6481d.pdfIn PDF document text
    • http://lukisasore.mywebcommunity.org/mifuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_604212c773deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_603103c6b337a.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/thirteen_reasons_why_season_3_episode_13_music.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/jbhd0hb/9064631823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5fdafe46a2fc1.pdfIn PDF document text
    • https://cdn.sqhk.co/rizuwevize/chdoheF/tunnel_campground_colorado_map.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/zunaduxa/concussions_in_sports_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a53651-501d-4ca2-b4e6-d8162de14a7d/math_kangaroo_usa_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88dcae23-64bc-44e3-b505-2cdbc488f1d0/negozexiroverobuxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c80442-08df-483b-91c1-12682688b759/how_to_refill_petsafe_citronella_collar_cartridge.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/animation_for_beginners_ipad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea14e7be-80d2-4624-a38f-ac06247a0749/xaremunefetix.pdfIn PDF document text
    • http://vebagakid.onlinewebshop.net/subamevoxamosotakeluj.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/pie_chart_powerpoint_template_free.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_off0000dc66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC66 5584 bytes
SHA-256: dbc0c9e492e9fe14422d86b1220e81b235becd58b6d9dd1d59e3a5dce124eadb
font_01_sfnt_off0000ef52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF52 10476 bytes
SHA-256: 611d39ac3b55e8b30c7a243170a3438c638a4bfbfabbe352c98eda00488e59aa

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