Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2636414fee96e7…

MALICIOUS

PDF

72.6 KB Created: 2021-03-04 10:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d58de6e2072891bca5c92db8271c731d SHA-1: ea39e67cb2d5e00f0b5eccb6e45fa20e58c21b80 SHA-256: ad2636414fee96e7478e289de5c1f0a049e283c59a6add315c956cfa5196ea3c
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/award?keyword=lenovo+thinkpad+t420s+bluetooth+driver+windows+10 In PDF document text
    • http://proita.fun/xorabemidaxgz2ta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485446/normal_602472ce7137f.pdfIn PDF document text
    • http://smartcoin.design/chopin_raindrop_prelude_sheet_musico9j4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498971/normal_5fe7952edfd24.pdfIn PDF document text
    • https://bijimuxe.weebly.com/uploads/1/3/4/8/134886115/vomod_bepexile_nuzukuzajo_wikezaga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365612/normal_5ffb1aea15929.pdfIn PDF document text
    • https://cdn.sqhk.co/rogudokives/hd4CRjb/robodeniwa.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/jghiDFg/redcon1_reviews_bodybuilding.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420934/normal_601b2a1e92f14.pdfIn PDF document text
    • https://maselevajaf.weebly.com/uploads/1/3/1/3/131398143/6006726.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/giOI4ij/18479669351.pdfIn PDF document text
    • https://dejatenuti.weebly.com/uploads/1/3/5/3/135348415/rebakegiwepipof_jelifujuw_kopovubokix_tetigazenibu.pdfIn PDF document text
    • https://cdn.sqhk.co/pininipata/Xigjhih/72313834095.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387706/normal_60063f65826f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nedijowewoded/fubosip.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/tepazosepiki.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/78896830558.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/24329213515.pdfIn PDF document text
    • http://tijemimujajig.rf.gd/caves_of_qud_latest_version.pdfIn PDF document text
    • http://zojabavikejowi.rf.gd/xbox_one_wireless_controller_headphone_jack.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/wisofibad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C0 5640 bytes
SHA-256: fd407adc27686049c65865d7e4a80095d38fb13b4dc79d7a0c400508b5c27b10
font_01_sfnt_off0000e3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FD 10096 bytes
SHA-256: ec484d43ae6e5e79152e52764ceaa845caee01d89cbbbb84a76617162a18282d
font_02_sfnt_off00010696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10696 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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