Malicious PDF — malware analysis report

Static analysis result for SHA-256 181baa8e9d723b6e…

MALICIOUS

PDF

71.9 KB Created: 2021-03-06 06:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a9facf6f0fc1c57a586d6d8ee7447537 SHA-1: b804a65316811df187ffb705c6d387ba85a7bc5e SHA-256: 181baa8e9d723b6ef143960200be5ba71e313de703df59d75702fd18d957dd6f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=gizmo+mouse+genetics+two+traits+answers PDF link annotation
    • http://kuwanusefunok.iblogger.org/google_drive_folder_python.pdfIn PDF document text
    • https://cdn.sqhk.co/jasekazus/fgczAZa/online_usa_shopping_sites.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/cTjf9gc/project_manager_construction_salary_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483089/normal_600cdf51a5c04.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/hdjgmif/94787963987.pdfIn PDF document text
    • http://kovativegapok.getenjoyment.net/pamenukusobes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457847/normal_6038d0ff80f55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_6041ac949eeeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mumupaju.epizy.com/kiniforewisexixikoju.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/jojiwef.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/27683277194.pdfIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_543c0acffe1349038657542824af941e.pdf?index=trueIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_c6bc891df8f1496b9006ac3f38f3b469.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/hearthstone_arena_guide_september_2019.pdfIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_a3db0520e63d44e1874cb23fcdd511f4.pdf?index=trueIn PDF document text
    • http://safipalibeso.rf.gd/38653867316.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/4264069248.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF83 5140 bytes
SHA-256: f93bca9f348afd6cf5489959bbf575c4253e8d9139da360323c33ff450c57808
font_01_sfnt_off0000e107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE107 10336 bytes
SHA-256: 7580783009b92a251107bc173f145117d6c2dd9c084aafebc45c8e0866796eb0
font_02_sfnt_off00010469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10469 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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