Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b7a09338507f15…

MALICIOUS

PDF

95.8 KB Created: 2021-03-12 20:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: af07cafc9c35b3c67b959b4049923bc5 SHA-1: 18763ffd19f8d22d31edb7e3793ec3c70857e6ba SHA-256: 88b7a09338507f15b4bae4237d962c156b1eb5b230c0a4004ef5b542f8e2cab1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=familia+cannaceae+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368504/normal_5feded15a0616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5fd137e51537c.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/FgeLQjd/world_war_2_movies.pdfIn PDF document text
    • https://cdn.sqhk.co/nunagike/jdghicp/gafapixos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454052/normal_601c653f8d497.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/toro_push_mower_dealers_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcc4daef2cb7.pdfIn PDF document text
    • http://kumululurug.scienceontheweb.net/97231404154.pdfIn PDF document text
    • http://paselon.getenjoyment.net/how_do_you_type_the_beta_symbol_on_a_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_196f5c115180411bbd5dea62695ddf81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezorito/android_10_update_for_samsung_s9_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/pacman_game_free_for_windows_10.pdfIn PDF document text
    • https://f07eb630-23ff-4298-a1df-d7940f1ba2dc.filesusr.com/ugd/097a5b_ac674baabd0346fc90c2848e81f148b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisiku/daruripaleburofozalubagub.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_6a4ee2ec6acb4e7c9e5aacf18b1f36bf.pdf?index=trueIn PDF document text
    • https://2dcb0092-dd22-4cef-90c1-8c398f802bb7.filesusr.com/ugd/ff3115_27d80935f4a64f82a2e05990981e5256.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lawakux/google_sheets_add_ons_for_education.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B93 4980 bytes
SHA-256: dd4f159591c14cc75af62a2a24df948bfaef921269ab24c191e2f9d9a6a12337
font_01_sfnt_off00014c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C7F 10744 bytes
SHA-256: 117223df878faa9c356f7333a1c4f5f3e9d105f81405b7308351c4590c50c9a7

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