Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c62a6d52fb5937…

MALICIOUS

PDF

68.5 KB Created: 2021-02-25 17:29:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37df96c1d823526ea0a750d5fd02d7a9 SHA-1: 155e5ade9433b24d7bb0868b4b2fa6a165e52d1f SHA-256: 15c62a6d52fb59370011afd2129a01ae0cb6daf51162eb029284397b8c5f68a4
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/award?keyword=how+to+change+battery+in+honeywell+doorbell In PDF document text
    • http://tefitagesev.mypressonline.com/jetux.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/26540897689.pdfIn PDF document text
    • https://riluvozig.weebly.com/uploads/1/3/4/3/134380056/7839941.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/is_season_4_of_tokyo_ghoul_on_hulu.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/itll_be_alright_meaning.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472484/normal_5fe4135756635.pdfIn PDF document text
    • https://xixasoxi.weebly.com/uploads/1/3/5/3/135324484/9201263.pdfIn PDF document text
    • http://xoguvux.22web.org/bmg_fluostar_optima_software_manual.pdfIn PDF document text
    • https://pifaxatopegamu.weebly.com/uploads/1/3/4/1/134108845/978758.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486053/normal_5fff5210aad47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuwewabarabin.epizy.com/tozaxipa.pdfIn PDF document text
    • http://widifusi.myartsonline.com/xaviera_hollander_libros_gratis.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/11073738550.pdfIn PDF document text
    • http://kagumaxapa.rf.gd/65873091710.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/gigirogu.pdfIn PDF document text
    • http://tesetibixofi.epizy.com/27034738052.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_off0000cd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD79 5320 bytes
SHA-256: e1803e51d6a29471455d50010c0b23084c57fe7f60da94ad5779300969e308eb
font_01_sfnt_off0000df9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9E 11720 bytes
SHA-256: 97612691f6b78f9d3d7ea1bfad014b449dc676894b9a7876e35fb1253f456d16