Malicious PDF — malware analysis report

Static analysis result for SHA-256 d353d738d73ecb9f…

MALICIOUS

PDF

67.2 KB Created: 2021-02-26 14:29:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 96a0ef71e203239f058be670a646304e SHA-1: 8b93911737bb1be448933923dc79357b2df769f3 SHA-256: d353d738d73ecb9f3924afe5d8fc76b1018d6bb6abc5b7cae2ab1059c023655f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=hound+of+the+baskervilles+jeremy+brett+cast PDF link annotation
    • https://cdn.sqhk.co/tibakekavero/eDtQnxJ/68388588074.pdfIn PDF document text
    • http://mitimewigupito.mypressonline.com/python_deep_learning_tutorialspoint.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/Akyhagf/business_management_jobs_salary_in_kenya.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412403/normal_60184e0fee297.pdfIn PDF document text
    • http://fesotisifofil.mygamesonline.org/should_i_use_a_salicylic_acid_cleanser_everyday.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/jfoe3UY/dafoki.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/can_you_sue_if_falsely_imprisoned.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_60388de8ac537.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://makijozexu.rf.gd/coping_with_anxiety_worksheet.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/ridgid_miter_saw_stand_review.pdfIn PDF document text
    • http://demuremapinob.epizy.com/strategic_business_plan_example_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/90210_theme_song.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_off0000c99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99B 5664 bytes
SHA-256: 19aab24ea1eab7880f492e9196100cafb845b676f5daff74c35da033f9db6b84
font_01_sfnt_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 10284 bytes
SHA-256: 51c41c9d2c109967ab28484ef35b60e293842e0ffa87673ea4b617104646737a