Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bdbbd8fc08e25a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-23 07:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 020106fae1033a6eb29a68c5e805bced SHA-1: e973e0de0340c2ecaaf04087f93562c59b3f69ba SHA-256: 71bdbbd8fc08e25a23ddd7defbf822fa3e7a8cdec7c84512d14997ecae7064cf
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://jacksth.ru/wix?keyword=the+medicine+bag+comprehension+questions+and+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408319/normal_60081bff38b20.pdfIn PDF document text
    • http://genusadnlo.space/gusavizadaduwepm7pra.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5ff4507668007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_6022d79c98034.pdfIn PDF document text
    • https://cdn.sqhk.co/zomulusiku/jhgsCji/homescapes_hack_ios_2020_no_human_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/cjiiaje/82916669004.pdfIn PDF document text
    • http://baby-slings.ru/singapore_kangaroo_math_past_papersm1avd.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/jMBhb6w/71879481678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443578/normal_600480a8437aa.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/gihggmh/lepotifilajitefokexid.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/eHmzPLb/call_of_duty_for_ps4_pro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457000/normal_60250c695670f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_6021beac74ba8.pdfIn PDF document text
    • http://arm-watch3.club/introduccion_al_derecho_marco_gerardo_monroy_cabra_gratisnwtlk.pdfIn PDF document text
    • http://dagaxen.22web.org/reading_comprehension_worksheets_first_grade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385617/normal_6016d4ac3f072.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufipixadum.epizy.com/zatafilapagisadidowukeg.pdfIn PDF document text
    • http://bosefijov.epizy.com/philips_headlight_replacement_guide.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_off0000dcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD5 5764 bytes
SHA-256: 4a89081100116203604c6b86f7fdb32b2b1ab1a715e691bf72bd3b50881d9a19
font_01_sfnt_off0000f044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF044 10556 bytes
SHA-256: 17a62207e88209f46efb71d50fefd99a688bd9fb811fe2405f6c3abe918080ce