Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c0539eebb631b70…

MALICIOUS

PDF

75.3 KB Created: 2021-02-19 22:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 66ebcd8a4d7556201d5a0dcf3f24b218 SHA-1: e173deea4b97241907378904bd03270905aeeff2 SHA-256: 5c0539eebb631b700ff2299285507e3e59ce1b94d89efc797e1426d4870621db
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wb?keyword=printable%20children PDF link annotation
    • http://lnstagramsecurity.net/commas_worksheets_for_grade_6ubdbv.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/T0Py8vn/star_wars_turbo_tank_parts.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/javariwilet.pdfIn PDF document text
    • https://guvorike.weebly.com/uploads/1/3/4/2/134266232/dekiz.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/fotadizo.pdfIn PDF document text
    • https://tesafugefiwa.weebly.com/uploads/1/3/5/3/135318727/1233924.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/dij9NAY/cruises_hiring_near_me.pdfIn PDF document text
    • http://phillipen.online/best_use_of_true_polymorphoi8me.pdfIn PDF document text
    • https://faremuxonebaw.weebly.com/uploads/1/3/4/5/134598019/tidikatiwipu.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/5KcmfDH/71500791172.pdfIn PDF document text
    • http://instapriz.online/grid-_template-_columns_auto_wrap8c285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425506/normal_602237694522c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494451/normal_602625a3f2436.pdfIn PDF document text
    • https://cdn.sqhk.co/duravukikemo/jegdjdB/affirmative_definition_in_urdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_600a561b17025.pdfIn PDF document text
    • http://hookup158.fun/72329085031fmtds.pdfIn PDF document text
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/punut_jobexoxom_zepabupulebitew.pdfIn PDF document text
    • https://zubikazosiz.weebly.com/uploads/1/3/4/7/134761183/bovevetabep.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_off0000e6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D2 5336 bytes
SHA-256: 787405d564c73039ad4f9a6f6c6ba4ca4c69217e940a0b0ce3c7ecf487f7885a
font_01_sfnt_off0000f8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E8 12084 bytes
SHA-256: a42cbc21af7c94fdca0b59bf396d27c087cdbf0f38ef8580b7957a7d00668941