Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a597f05d5f127e…

MALICIOUS

PDF

77.8 KB Created: 2021-01-20 03:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4f2d857f12440144f65f28835cdaa772 SHA-1: 62d0845b5ea0ea32472336a4c6f3f7262af622a5 SHA-256: 70a597f05d5f127e9609df65624dedd78fb9ec514adcfa3c9592d7d2debaeb35
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=types+of+insect+antennae+pdf PDF link annotation
    • https://site-1175908.mozfiles.com/files/1175908/metube.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/aAidYd3/45425887655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416136/normal_60076771a2929.pdfIn PDF document text
    • https://site-1172012.mozfiles.com/files/1172012/raxuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420431/normal_5fd22791af887.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/qs2jh9w/2902328317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_5fe8b9e4db8e3.pdfIn PDF document text
    • https://site-1177862.mozfiles.com/files/1177862/slide_away_meaning_of_the_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_5f98d73051ca4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f878c0dc5114.pdfIn PDF document text
    • https://site-1166710.mozfiles.com/files/1166710/vonewolawowiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495241/normal_6002b86db37ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5f92286e1c672.pdfIn PDF document text
    • https://cdn.sqhk.co/tevitogaperu/bicgCwU/drum_machine_online_musica.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/jefazaxal/90512327096.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/disney_cartoon_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/8297691948.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/saki_saki_song_lyrics.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_off0000f45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45F 5072 bytes
SHA-256: 8d3e34bec722a132f62abb70d584eb56496cccfe2230a93dbbad64e36eedc605
font_01_sfnt_off000105c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C6 10836 bytes
SHA-256: cbb8ce325dcb6b3229ee36b364b9578bafa7edf204c3254ccf20297e12dd9f32