Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8495c770ca4d9a1…

MALICIOUS

PDF

69.2 KB Created: 2021-02-17 23:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4178de69356f49a9a21646a8d5f95b5e SHA-1: f49664fa3835f661b89918279e0dd8878e46ec45 SHA-256: a8495c770ca4d9a140f6a419bea88af925b9272101ec42cba54e604b2ae2ba04
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://druttle.ru/wb?keyword=how%20to%20convert%20word%20form%20to%20excel PDF link annotation
    • http://vafotaxikijofol.iblogger.org/emulateur_android_ds_gratuit.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/gedfNhc/soccer_hero_2020_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_601c8f1ae56c4.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/7uhiiiN/daily_checklist_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/fhbfPjd/51997698439.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453550/normal_5fc603acedd24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408596/normal_5ff0cd1dd4d1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451760/normal_5ffa20507c5af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keximidurowu.rf.gd/62692877384.pdfIn PDF document text
    • http://boxitevu.rf.gd/palubapit.pdfIn PDF document text
    • http://rusesav.rf.gd/xabis.pdfIn PDF document text
    • http://wutobonedurovit.rf.gd/english_grammar_workbook_free.pdfIn PDF document text
    • http://gupepitasaxisal.epizy.com/jim_corbett_national_park_travel_guide.pdfIn PDF document text
    • http://suzawelo.epizy.com/capitalism_in_the_twenty_first_century.pdfIn PDF document text
    • http://pafixorofabeza.epizy.com/battlefield_4_free_highly_compressed.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_off0000d1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D7 4960 bytes
SHA-256: 41ca367cad54c1454926eb93466ece27d93277545dd300d912b8317a802664d9
font_01_sfnt_off0000e2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BB 10872 bytes
SHA-256: 44dde06d4573a9d1d62af298bc38f44579fb2dda34bf9372a8a8a02a652eb485