Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f8733cf663a7f9…

MALICIOUS

PDF

71.9 KB Created: 2021-03-05 14:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 48a5d7920c73b4c4b97e54320d3f4b22 SHA-1: 100c6e28f19402fe9dc3b02d8c18053ad1411e9f SHA-256: d1f8733cf663a7f9e9a03dd4930908c8132e29b29473486ebf136ca494e9e94e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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.
  • 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://golowaki.ru/wix?keyword=little+critter+book+just+go+to+bed PDF link annotation
    • http://newberginvestmentproperty.com/whirlpool_freezer_repairs_near_me10f5h.pdfIn PDF document text
    • http://rusadezebep.mygamesonline.org/data_warehousing_concepts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_60194fbe1a715.pdfIn PDF document text
    • https://mokizafot.weebly.com/uploads/1/3/5/3/135347773/9171903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380699/normal_5fd7ccccc3009.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_60134ce4f141b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_60321edac26a8.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/statistics_machine_learning_python.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/fegaxorujep-nefogize-rexebemoxo.pdfIn PDF document text
    • http://marketes.pro/marvel_comics_characters7gm78.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/faf964fcc4f935e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480161/normal_5fec8d8507099.pdfIn PDF document text
    • http://sazulido.medianewsonline.com/goat_simulator_ps4_trophies.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/how_to_obtain_a_ministers_license_in_minnesota.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475734/normal_6013334cc7c2b.pdfIn PDF document text
    • http://sberbank.services/kejetujagavuvuzifemunu0c4oi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459654/normal_6001cb3d343cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486778/normal_5fe9c3d95e50f.pdfIn PDF document text
    • https://gupobotinifetex.weebly.com/uploads/1/3/4/3/134338345/7396358.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
    • https://s3.amazonaws.com/verirejon/94417166385.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/web_to_addon_for_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/ti_spreadsheet_compare_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/orang_orang_biasa_andrea_hirata.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_off0000d19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19F 4892 bytes
SHA-256: ed1b4ee5a1382da9b88a3077a83a14e2acfd83d4a6dafec5244b72e917c812d4
font_01_sfnt_off0000e258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE258 9680 bytes
SHA-256: e8b81a4e66b23835375549a32649094b621b3369ee49cbb2c450351950098c91
font_02_sfnt_off00010382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10382 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361