Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d9121f301b24c7…

MALICIOUS

PDF

71.8 KB Created: 2021-03-02 10:19:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f88b6b53443467180cbca4d7fef3f692 SHA-1: 17e05055ebbb64a77d8b733576da6f2ef1789213 SHA-256: 76d9121f301b24c7205a9782e63d54fde1f7e25ad65d6b897f8dd288d9761330
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/award?keyword=jaggers+auto+repair+south+gate PDF link annotation
    • https://midunaso.weebly.com/uploads/1/3/4/6/134680252/1088823.pdfIn PDF document text
    • https://loseseseveru.weebly.com/uploads/1/3/0/8/130813975/belexo.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/how_to_say_hi_in_japanese_translationfsbs9.pdfIn PDF document text
    • http://creditreportus.info/nopijuzexeganezen3.pdfIn PDF document text
    • https://lezezirurebox.weebly.com/uploads/1/3/5/9/135967023/080136.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/tofenosewebukowonito.pdfIn PDF document text
    • http://braco.ru/414999650175i3sj.pdfIn PDF document text
    • http://joxitikoki.getenjoyment.net/jakoletajupamotemenaw.pdfIn PDF document text
    • http://1yamal.space/calculus_one_and_several_variables_with_analytic_geometryq31hh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wujuxupizosafe.rf.gd/game_templates_unity3d.pdfIn PDF document text
    • http://zutumifamele.rf.gd/rexesalogijagopaji.pdfIn PDF document text
    • http://xomaxoritekopir.epizy.com/65996476610.pdfIn PDF document text
    • http://xizisot.epizy.com/34973855711.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/89185750337.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_off0000de13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE13 5040 bytes
SHA-256: 49e61a19a8f0a3df25e8cc3826e4c0647d6632de656b677268d55d6c72e9b241
font_01_sfnt_off0000ef31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF31 10444 bytes
SHA-256: 19385e2b0926d58246139fd49ecfa519599d6be51cd8f277d8f129d6babbb61b