Malicious PDF — malware analysis report

Static analysis result for SHA-256 73b78bada7222c11…

MALICIOUS

PDF

70.6 KB Created: 2021-02-21 13:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32f168cef9b93eac686a006224618e45 SHA-1: 733727bcc0f41c111f58d03f8d36a32b13eb90c9 SHA-256: 73b78bada7222c110e32f1793221d516574a6dc4d6012017d336c3773cf0a0f9
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=game+gem+hack+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369514/normal_60011d6bcbc68.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/pijudulizato_rawigetujumir_zabeserufo_jakizode.pdfIn PDF document text
    • https://puvugemamoj.weebly.com/uploads/1/3/0/9/130969199/b327e8df.pdfIn PDF document text
    • http://zekabivalejasaj.22web.org/backup_exec_15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492259/normal_5ffa8d7e0d569.pdfIn PDF document text
    • https://lipuguxe.weebly.com/uploads/1/3/0/7/130738524/6556932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478703/normal_602b7ff8ecc6f.pdfIn PDF document text
    • https://telixezudaridif.weebly.com/uploads/1/3/0/7/130775339/suwinipode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/inferential_analysis_of_quantitative_data.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/25719878028.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/mezadalemevudifabire.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC07 4580 bytes
SHA-256: bbb90ba4aa756829feb167fa65fa33c5ebd8303064a813b1939c3429daffa33f
font_01_sfnt_off0000db9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9D 10592 bytes
SHA-256: 5e6df2f9b391eeee809b9c5fb9605bd3d8e389029cf714f3008bb2074d2518c2
font_02_sfnt_off0000ffc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2