Malicious PDF — malware analysis report

Static analysis result for SHA-256 7484f634de153016…

MALICIOUS

PDF

68.9 KB Created: 2021-02-09 09:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c931e01caa67fc389e3184fd286ff839 SHA-1: 81405fcf711d833276be557dbdcf347b3aeeef6d SHA-256: 7484f634de153016c10334e706a479b31fe70fd18c584040984e2d87ec54b88e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=best%20online%20share%20trading%20platform%20uk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4488815/normal_5ff8d783888b9.pdfIn PDF document text
    • https://telavepifamika.weebly.com/uploads/1/3/4/3/134352802/6830606.pdfIn PDF document text
    • https://zudovizu.weebly.com/uploads/1/3/4/3/134338339/favefujarop.pdfIn PDF document text
    • http://gogotmif.space/dadenenutajamapyf070.pdfIn PDF document text
    • https://vufufibujirefe.weebly.com/uploads/1/3/4/3/134355905/sutopuravik-rixiwadugebe.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/s6ghgje/lonemazotilolijuxovas.pdfIn PDF document text
    • https://cdn.sqhk.co/zebapomiz/lgfzhgT/photo_editor_pro_samsung_s8.pdfIn PDF document text
    • http://secureappeal.com/lilitasijisoragener4trx.pdfIn PDF document text
    • http://dfwshootersupply.com/calheta_beach_i_madeira_portugalp2u14.pdfIn PDF document text
    • http://hotel-engels.ru/immacule_concepts_de_service_de_netnlomn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448731/normal_5ff2957bd5225.pdfIn PDF document text
    • https://refugisedenofa.weebly.com/uploads/1/3/1/3/131380322/xirozatitoj_vudatovuzasege_sotiga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/simubur.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/vevenizolofibezatev.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/635672993.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_off0000d0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B0 5568 bytes
SHA-256: a1106372498e173eb1d0cf0d3d3a5a8f1e52b659a5d6851b995f3b07ff8caa96
font_01_sfnt_off0000e374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE374 10512 bytes
SHA-256: 3cfb3f47efe4f16f4038543a32a7d14577b546606db541de2786f01d1d57ff24