Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e4c669ee0dfad0…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 10:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 92f2fd8947928c03faef278ca4033d51 SHA-1: 872541fffa178b8e80359108d40013dd0bfbb523 SHA-256: 93e4c669ee0dfad0c741222b028bf29f74c07f1ec2be4808c79d237735cc116a
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=tutuapp+apk+android+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fd66097c4aef.pdfIn PDF document text
    • http://bifixofunoxov.iblogger.org/general_manager_cover_letter_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371498/normal_5ff5c422e2463.pdfIn PDF document text
    • http://gajozemexip.22web.org/43445904224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420764/normal_6007e2bd466b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505102/normal_6006b2e47948b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420760/normal_603a5c2057d4e.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
    • http://vemibus.epizy.com/methodical_illusion.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/tarolusofo.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/jegonomomivuvipibofo.pdfIn PDF document text
    • http://divepirat.epizy.com/fafemojojasadinetizijowa.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/chitapata_chinukulu_aithe_song.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/tijonumosisijow.pdfIn PDF document text
    • http://zuzojep.rf.gd/sklearn_classification_report_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/videoder_14._2_apk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/nolovodefaduxubidekoxuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/gifovakonajolotegelupafo.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/jotoziginifi.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/emotional_regulation_worksheets_for_youth.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_off0000d449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD449 4792 bytes
SHA-256: 1c91626d1b5ad14d3fcaf8d150bd1b68fbb058465f5fc91f2b698c33dd501333
font_01_sfnt_off0000e48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 9936 bytes
SHA-256: dc586e8c212b5759bf86162f965e89732cec16bf10ec0d4788676e0aeed02f38
font_02_sfnt_off00010671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10671 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378