Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b771bbda55250a…

MALICIOUS

PDF

70.4 KB Created: 2021-03-02 10:05:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50313a7642e25d7200fceb8df4c716d5 SHA-1: 6499fb41461937f4206598adf00f3b949883d0bd SHA-256: b6b771bbda55250a3056944fd94fabec8271c575f7c83eac350ae0fcb76c3a20
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=double+shower+curtain+hooks PDF link annotation
    • http://ginupedarokuxu.getenjoyment.net/oracle_12c_end_of_life_extended_support.pdfIn PDF document text
    • https://nupepapuk.weebly.com/uploads/1/3/1/4/131484133/lofamo-liporituk-poxagebis-pusofagidar.pdfIn PDF document text
    • https://sovomebidug.weebly.com/uploads/1/3/1/3/131379042/zarazi_zagalavuroles_tuboteb_wisapupi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_602e6fd0c14e5.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/kasavog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_60111e64ad0d3.pdfIn PDF document text
    • http://rarubife.mygamesonline.org/is_tokyo_ghoul_season_3_coming_out.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472766/normal_5fce5b9d6658c.pdfIn PDF document text
    • https://tizonitiwu.weebly.com/uploads/1/3/4/7/134734793/dosevolitoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457332/normal_5ff97ef91aa29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rejufamux.epizy.com/95726183615.pdfIn PDF document text
    • http://lozekav.epizy.com/onerepublic_start_again_song.pdfIn PDF document text
    • http://nakulugexogi.rf.gd/ridofewewutadi.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/57346263467.pdfIn PDF document text
    • http://favekagopu.epizy.com/abdominal_compartment_syndrome_guidelines.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_off0000d29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29C 5180 bytes
SHA-256: be2b9de0d48b6d87d7b8c00ccb1753166e6fa56bc0a911b50475cf4eca1b319e
font_01_sfnt_off0000e44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44D 11920 bytes
SHA-256: dd62e9ccceee6543a5e7791a7ec477a9907a5947a2f6bd0a5695e858577fbda8