Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d4b8125ee7592d…

MALICIOUS

PDF

76.8 KB Created: 2021-03-01 21:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 33903ff3f13885a02b5b3d1685ccaec1 SHA-1: 6f6aba1f6e7524b65dbc89015f36f2f435aa0e19 SHA-256: a0d4b8125ee7592d2c0d5fc5bc7abee9e7dd86473097b0e03f5697a4d3e29499
126 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
  • 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://pelibifir.ru/award?keyword=presto+06857+electric+skillet+16+reviews PDF link annotation
    • http://rafupofamurawaf.mygamesonline.org/fisoroletora.pdfIn PDF document text
    • http://sunny-web.ru/33116268763dijbk.pdfIn PDF document text
    • http://help-mediasupport.com/basic_arabic_to_english_dictionaryyxzj3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5ff442bfc78d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469634/normal_600273e70a514.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/3514978743.pdfIn PDF document text
    • http://bridgecommerce.com/cfi_trainer_test_answersmoj7k.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/94400030587.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_6034cac663a49.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/luzijukekiun7ct.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fd1902b6ad8e.pdfIn PDF document text
    • http://bigpleasure.ru/mefawokijasiel8wx.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/sajatesawodiji/56376917808.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/zogapusubefuvukurured.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/dadopijixivokirebakebo.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_off0000ef66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF66 5544 bytes
SHA-256: ed3a2c914b92ef034a2a3356e6fb8843de1ff730b0cb46e7f33c44d85cfcb055
font_01_sfnt_off0001027d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027D 10540 bytes
SHA-256: 6a69a6c6bbd7500e3a3d163443e8e5e65bad641ccc13d21a94b9885b977a210e