Malicious PDF — malware analysis report

Static analysis result for SHA-256 5503d16fff2bbba4…

MALICIOUS

PDF

65.2 KB Created: 2021-03-03 21:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f398ab4464338521bfe272f12662c31e SHA-1: 7cbe359a16e64b9be040c0eca124aba3d4e4ac1c SHA-256: 5503d16fff2bbba40fba599e35e8384b6cf199b5659803ed126cd0e8c045c92a
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/award?keyword=how+to+fold+proform+crosswalk+395+treadmill PDF link annotation
    • http://all-host.site/nixozexadowpv0vh.pdfIn PDF document text
    • https://cdn.sqhk.co/wusezofetib/wxUMjjU/nowewavivataxasuriwijo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5fd03f873ab02.pdfIn PDF document text
    • http://drnextact.xyz/tinegebizizuxrm81.pdfIn PDF document text
    • http://vovpomnim.ru/chatrapathi_tamil_movie_video_songs_freepivkm.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/jajhhf1/nodotaveremazakujaxag.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/21783186447.pdfIn PDF document text
    • http://899themes-demo.ru/passive_voice_simple_future_exercises6vmug.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/bakoloj/barawudirabori.pdfIn PDF document text
    • http://dixuzudes.epizy.com/19091777997.pdfIn PDF document text
    • http://tudikon.epizy.com/6769246955.pdfIn PDF document text
    • http://widafasamuj.epizy.com/zotebukasane.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/dilemma_riddim_instrumental_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/viwawitaze.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_off0000c224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC224 5864 bytes
SHA-256: 644be5b69d3fa2b4e2088a5398b46747dc0c03b547a598e4260867b8b95df32e
font_01_sfnt_off0000d614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD614 9884 bytes
SHA-256: 09be4858c08284f6be433e166728b03e24cd82a9ffe2e6b34fe76893924b3001