Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a59670a8002e4d7…

MALICIOUS

PDF

71.7 KB Created: 2021-01-21 13:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 083820000eb89d236a60be025220d333 SHA-1: 8c42f0423536b5afd597b04fa71df05515bac673 SHA-256: 0a59670a8002e4d751ae59e9f5b9551c7b752b225defeeee6e84e0522bc2f049
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://jottigo.ru/123?utm_term=elementary+vietnamese+binh+nhu+ngo+pdf PDF link annotation
    • https://site-1176205.mozfiles.com/files/1176205/xujatofapavidovuvixike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fad58c694d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407994/normal_5f9c6a6867bad.pdfIn PDF document text
    • https://site-1173734.mozfiles.com/files/1173734/jovedabapaporopeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465133/normal_5fe408714e705.pdfIn PDF document text
    • https://site-1177315.mozfiles.com/files/1177315/sun_tzu_art_of_war_quotes_deception.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/jiPtLhi/97666539681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5f90a4ac8f803.pdfIn PDF document text
    • https://site-1177860.mozfiles.com/files/1177860/50362384753.pdfIn PDF document text
    • https://site-1172418.mozfiles.com/files/1172418/spotify_windows_xp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496014/normal_6005f81b5d5cd.pdfIn PDF document text
    • https://site-1171394.mozfiles.com/files/1171394/75019343556.pdfIn PDF document text
    • http://rikororasikenek.iblogger.org/99553874107.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vapanuwivodoj.epizy.com/64854300570.pdfIn PDF document text
    • http://zanukabijegur.rf.gd/74000239325.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_off0000d4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DE 5712 bytes
SHA-256: e90714ecbf052e41a302f06efb921d12c5bb4ff3a3fd40932580ea7228dbc1f3
font_01_sfnt_off0000e82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82F 12872 bytes
SHA-256: 518c53a6f32d6bf07efef7ac5dcb59df0855344f1c1b2b10bf1612bee15171c5