Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec01271825d2357…

MALICIOUS

PDF

71.7 KB Created: 2021-02-10 09:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5b73b12b95cd5918f206a9b2144ca505 SHA-1: b75042428a63335ed104642aec1734ca968d3f76 SHA-256: 6ec01271825d2357421fb3b087da5cfc1462c1d528973bbb2d2ebc47467dd935
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=lol+swain+guide+s9 In PDF document text
    • http://bonifacy.site/48144857314t8y6y.pdfIn PDF document text
    • http://gebajajax.22web.org/safefuwudevepalugu.pdfIn PDF document text
    • http://ejqy.com/fakinolanozujivixakikunloe4n.pdfIn PDF document text
    • http://tvoyoproc.fun/lunawunopemojebhwx3g.pdfIn PDF document text
    • http://mozujana.22web.org/dendrobium_orchid_care.pdfIn PDF document text
    • http://skameyki.club/lambda_layers_performancey72ff.pdfIn PDF document text
    • http://rat-red.space/frequency_table_worksheet_6th_graderywah.pdfIn PDF document text
    • http://money-team.site/aldi_sd_karriereportaly4hxy.pdfIn PDF document text
    • http://baxagaxisatipa.22web.org/duron.pdfIn PDF document text
    • http://moviesaddaa.online/photodex_proshow_gold_6.0.3397_activator-rndd31uan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://metukukerog.epizy.com/47591722442.pdfIn PDF document text
    • http://jivobolalozula.rf.gd/fedulivitowu.pdfIn PDF document text
    • http://witopovuketoj.epizy.com/mitelezinasov.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/neviwoseza.pdfIn PDF document text
    • http://gekekenam.rf.gd/55539066428.pdfIn PDF document text
    • http://sikofus.epizy.com/appvn_apk_hack.pdfIn PDF document text
    • http://jolavewavesuj.epizy.com/photoshop_calendar_template_free.pdfIn PDF document text
    • http://gulavofi.epizy.com/authorization_letter_format_to_collect_salary_cheque.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_off0000daf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF2 5084 bytes
SHA-256: af53572d348922814ab47f6a9d4a3c84bf64b43759c8ec0a7b58e6bddb8bdca2
font_01_sfnt_off0000ec66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC66 11308 bytes
SHA-256: 534157f2ff17cb08f905fb4ebfb70b1ace177c25fcf446019e7e0aa5cf89e886