Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec3d4a97e861f1c…

MALICIOUS

PDF

78.6 KB Created: 2021-03-05 14:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f2272699c74c1fc6a38f812b66ca1e40 SHA-1: bf7a1b8b2bdd576dcdbc192667ada6d1dc209651 SHA-256: fec3d4a97e861f1c7dadf83432953877d6db456fa3b4b5cca6957ed52d30a6c8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/award?keyword=without+remorse+trailer+deutsch PDF link annotation
    • http://jofifuneku.medianewsonline.com/kojotokavigagoxanipew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_60281ee38f541.pdfIn PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/8192d46f9d.pdfIn PDF document text
    • http://jebebixazonutug.mypressonline.com/75617057302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_60158c18d114a.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/who_makes_rheem_furnaces.pdfIn PDF document text
    • https://samabuwe.weebly.com/uploads/1/3/0/7/130739499/mosorevam-taresevuferefo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403805/normal_5fcb6bd4af676.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/how_do_i_find_network_security_key_for_wifi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5ff248b4f29f7.pdfIn PDF document text
    • https://mevemedetu.weebly.com/uploads/1/3/1/8/131871578/fb3128e368592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506200/normal_601bc75c0a1d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_6033bd3d1d4cb.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/42046336878.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/gofepelanan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bowegasobufur.myartsonline.com/internal_auditing_assurance_and_consulting_services_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f458a87-1917-4420-9ad4-d38daf6f8ce2/how_to_use_taylor_kitchen_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50d959a-db3f-44ac-95d0-29deadfabfab/does_pals_serve_breakfast_all_day.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_off0000f85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85D 5192 bytes
SHA-256: b7d895095b60d20ffd3bdf37e46138d864a2967ced562efd1081eb7694d9be8f
font_01_sfnt_off000109e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E1 10428 bytes
SHA-256: f9385f8c8ec003b5e7c4b1668ecf8df2211f3ef6cee386c6a33de0d33f31bbc7