Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b7fc8879274233…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 04:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ecc0759b800a7e1a7580df31a6158608 SHA-1: 5066bea67031065a94b8e0221b2be80239c70fb4 SHA-256: 68b7fc88792742338d53fb465757b71e97b57260a373e263d0733e91a88a7a18
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://dafemum.ru/wix?keyword=toomics+mod+apk+1.3.4 In PDF document text
    • http://tamakar.tech/ulrich_beck_world_at_riskaq02z.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/eidjjh8/xezujufiminexikorogi.pdfIn PDF document text
    • http://legendbilisim.com/ripexatufoj3hycj.pdfIn PDF document text
    • https://wikagigodoxuf.weebly.com/uploads/1/3/2/8/132814929/4015413.pdfIn PDF document text
    • https://mavipevawifuduv.weebly.com/uploads/1/3/4/5/134598931/c3fc187d0.pdfIn PDF document text
    • http://my-favshope.online/wound_care_guidelineso55w8.pdfIn PDF document text
    • http://nakanilo.club/952082106606s3h6.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/what_is_tcp_ip_port_for_printer.pdfIn PDF document text
    • http://tumerasiwabuzip.22web.org/sopisa.pdfIn PDF document text
    • https://nupimixek.weebly.com/uploads/1/3/2/7/132712066/3f484.pdfIn PDF document text
    • https://zuzuvisaze.weebly.com/uploads/1/3/0/7/130738998/f8a5a0fa99b.pdfIn PDF document text
    • http://zoomita.fun/354298896871hau7.pdfIn PDF document text
    • http://findssldz.xyz/juxupv8bn7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://madepug.rf.gd/67300175824.pdfIn PDF document text
    • http://kemeterotef.rf.gd/gta_san_andreas_all_cheats_app.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_off0000d721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD721 5440 bytes
SHA-256: 86ac44cb0c4579cd42a533a95f7ba637c21a07342a195ba49f0ee9011a322874
font_01_sfnt_off0000e9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A2 9952 bytes
SHA-256: d66e02f451284066a44d674da2cd7b6201ea3731d719252e2268ac10c90624e1