Malicious PDF — malware analysis report

Static analysis result for SHA-256 37fd6b108455f615…

MALICIOUS

PDF

66.9 KB Created: 2021-02-27 06:05:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dccc98250ebccaac06cc540921ed27ef SHA-1: 3d861afa5205ec1e0d82bd72087ce4595b986bd3 SHA-256: 37fd6b108455f6159928afe1f422df0223171aabc1abfb9fcdfff95126f84d3d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jottigo.ru/award?keyword=mage+the+ascension+pdf+free+download PDF link annotation
    • https://lafozevu.weebly.com/uploads/1/3/4/3/134378288/9638714.pdfIn PDF document text
    • https://rulusekiraz.weebly.com/uploads/1/3/5/3/135322703/kexumifasinuja.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/iijjjbV/file_manager_for_ios_7.pdfIn PDF document text
    • http://esclick.pro/how_to_join_wood_together_without_nailsa0wdl.pdfIn PDF document text
    • http://complerbnp.com/5492133660wi9u4.pdfIn PDF document text
    • https://bozuwosumexoxal.weebly.com/uploads/1/3/2/6/132682772/4401876.pdfIn PDF document text
    • http://world-wild-shop.com/ace_attorney_trilogy_emulatorfrpkz.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/VxhjITQ/96348057962.pdfIn PDF document text
    • http://gilumesu.mypressonline.com/homemade_3d_printer_plans.pdfIn PDF document text
    • https://mopirolelawa.weebly.com/uploads/1/3/4/0/134012876/af8a04406595fc.pdfIn PDF document text
    • http://xifasiv.getenjoyment.net/tabela_de_consumo_de_energia_eltrica.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jopatodorijapu.epizy.com/basekevatewoxuna.pdfIn PDF document text
    • http://pawubiba.epizy.com/apple_watch_4_watch_face.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/epic_seven_lorina_skill_tree_guide.pdfIn PDF document text
    • http://wudemexa.myartsonline.com/nj_driver_license_not_for_real_id_purposes.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_off0000c82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82D 5512 bytes
SHA-256: c161927ef7fd901bc17e277fcf14d791125e8a510a6284f224ae0a85f6c27ff1
font_01_sfnt_off0000db0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0A 10508 bytes
SHA-256: badcfcfd83904a338b566f5dba4fb0df1e53bf751062c7d564de6f90a7bff387