Malicious PDF — malware analysis report

Static analysis result for SHA-256 14dff7c9dfcee31e…

MALICIOUS

PDF

71.9 KB Created: 2021-02-22 05:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 230a597efd78cedb49ed1c3ed82009a5 SHA-1: a68cad326868922125caa8943524ea5c17dd79ee SHA-256: 14dff7c9dfcee31e89e8d70d8883157e89d6e938796c0032681cd32c8afa5e53
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wix?keyword=starch+solution+book+pdf In PDF document text
    • http://ctuxuu.com/487418717poqhx.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/mikunuvizi-sozapakip.pdfIn PDF document text
    • https://kunudixi.weebly.com/uploads/1/3/4/6/134667289/fejafumezi.pdfIn PDF document text
    • http://molotkov.site/numofunokajipogx3pmw.pdfIn PDF document text
    • http://bupetud.xyz/realidades_2_capitulo_1a_1a-_8_answersnecbz.pdfIn PDF document text
    • https://nidetufuw.weebly.com/uploads/1/3/6/0/136097009/9adc5b956db1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366343/normal_5ffa340fe79e5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wamivofubamaxit.epizy.com/villain_bengali_movie_video.pdfIn PDF document text
    • http://zegubexov.epizy.com/surojatalarosuzitisulu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/39618094308.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/gasetiw.pdfIn PDF document text
    • http://masusekokuberex.rf.gd/google_sheet_gantt_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/zubotatubawazofafiwu.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_off0000ddec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEC 5548 bytes
SHA-256: c38ef8b6b54f9387e463db8a14d40ec5d03001189e894244b5660d2e728c8316
font_01_sfnt_off0000f0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BA 10080 bytes
SHA-256: d8c37ce8e199213d447d590d34cdd50b225ed4d2804343f461613689f1646684