Malicious PDF — malware analysis report

Static analysis result for SHA-256 f785538bf3a311d8…

MALICIOUS

PDF

65.7 KB Created: 2021-02-03 22:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: caaa20fec7974d2e805af86448003f82 SHA-1: 5e80a3de37f5a7c9bcfe26aa4f68848777233c00 SHA-256: f785538bf3a311d8da2d4af61f2b522c14008373af11d2efa861d55108810b76
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://baarspo.ru/aws?utm_term=byousoku+5+centimeter+sub+indonesia PDF link annotation
    • http://alex-travel.moscow/85646284868dc36e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461483/normal_5fdf2bffa67de.pdfIn PDF document text
    • http://mavitrade.com/franklin_covey_weekly_planneriodfv.pdfIn PDF document text
    • http://googsnat.space/biology_science_for_life_with_physiology_6th_edition_freewhw56.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/ejjzGia/35023573916.pdfIn PDF document text
    • http://merulabodonulu.iblogger.org/pieces_of_information_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/gjFejgF/66951917725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451941/normal_6000782c0d8eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410730/normal_5fdffb9093594.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/xowasosuf/akreditasi_unpad_teknik_informatika.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/m_l_a_ki_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/jogopuvelibuwan.pdfIn PDF document text
    • http://migukim.rf.gd/85512734577.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/affairscloud_april_2019.pdfIn PDF document text
    • http://wesovipimamino.epizy.com/heart_shaped_gift_box_template.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_off0000c051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC051 5532 bytes
SHA-256: ec28d5f21d04cfc826c29d4444d7fadc200a0f01ee2a6930bdb772d821d72bdc
font_01_sfnt_off0000d31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31D 11064 bytes
SHA-256: 5c0eb8a65849bc969b314e6781e083898450372e778e380886fb1498559ccdc3