Malicious PDF — malware analysis report

Static analysis result for SHA-256 934c33cc905eaaaa…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 00:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 36985aa3cd1e47075f7e687d6ab990d9 SHA-1: 48bc68e2133c5e3549c0357f076b2741458f7877 SHA-256: 934c33cc905eaaaa15441776a9bf58999305a36e475d477fc5adae2761eb7b22
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://xezojetit.ru/award?keyword=where+can+i+cash+a+us+postal+money+order+near+me PDF link annotation
    • https://cdn.sqhk.co/joxesinejag/giejagc/24433437425.pdfIn PDF document text
    • https://cdn.sqhk.co/keperivosa/idjcOgc/bmc_healthnet_provider_manual.pdfIn PDF document text
    • http://santand-es.com/53632908555vmpzf.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/ge3geyw/zizafemewifipidusuri.pdfIn PDF document text
    • https://poxemitiwafu.weebly.com/uploads/1/3/1/8/131871555/705542.pdfIn PDF document text
    • http://trikotoria.ru/macmillan_beyond_b2_workbook_answers4694w.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/vimidinekujawomevapenagi.pdfIn PDF document text
    • http://lenorimageb.iblogger.org/classes_of_phylum_chordata.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/vebifuzibekebodisa.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/gqGheVo/legilajibebimexizilegovo.pdfIn PDF document text
    • http://tapadobav.iblogger.org/4376642094.pdfIn PDF document text
    • https://cdn.sqhk.co/lenufetimop/ginjeRz/zuzimukanevemijixi.pdfIn PDF document text
    • http://damvglaz1.xyz/70551148427xgtl6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozidijapepore.atwebpages.com/double_bar_graph_worksheets_4th_grade.pdfIn PDF document text
    • http://zozadugaweguj.epizy.com/tupadixibanigip.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_off0000e64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64B 5428 bytes
SHA-256: 977f92ba8b205ee9411e19d034a4c774c67e17d5bee16397e4e34755d42643d5
font_01_sfnt_off0000f8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A8 10676 bytes
SHA-256: 3864f25cf5c11e2b2c164bcc5a17dd4abbd16b9f15265b660cb26599b9badcea