Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5998b145b06777…

MALICIOUS

PDF

76.8 KB Created: 2021-02-26 02:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f76d13c5732e6d64cb646f61f9301b2e SHA-1: 25192b585becc5b3cd40b6d6a88c3a530239df9d SHA-256: 9f5998b145b0677725adb4d15121af6762aacc3dc7bac3d2f4bab2f6854e7d86
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=why+is+appearance+important+in+an+interview In PDF document text
    • http://lorewipa.scienceontheweb.net/mr_heater_big_maxx_80000_reviews.pdfIn PDF document text
    • https://wotutokope.weebly.com/uploads/1/3/5/3/135315373/6411180.pdfIn PDF document text
    • https://romenugerod.weebly.com/uploads/1/3/5/3/135317494/4585777.pdfIn PDF document text
    • http://mozodulo.iblogger.org/ioptron_skyguider_pro_payload.pdfIn PDF document text
    • http://kitotujebox.22web.org/homelite_blower_parts_bunnings.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/44003602038.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jidifulake.epizy.com/64146997552.pdfIn PDF document text
    • http://tagekef.rf.gd/57759603080.pdfIn PDF document text
    • http://vimodamugirad.rf.gd/biztalk_server_2016_licensing_guide.pdfIn PDF document text
    • http://pefoxaxogux.epizy.com/75978544299.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/4120968183.pdfIn PDF document text
    • http://fimaxopazeviv.rf.gd/74276784426.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/ravigubobajelibin.pdfIn PDF document text
    • http://vejimugar.epizy.com/bilinear_transformation_in_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/lilis.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_off0000e4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CA 5408 bytes
SHA-256: 38e75f5db9b357eef5194c668fb34d98669ae90346fb9b6fdd3dc5ed3a2f5519
font_01_sfnt_off0000f720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF720 15308 bytes
SHA-256: bf8c39c568f2868584c2e36a42f44818c29641a726d3056837c1854784caa120