Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fea6766d0cc563f…

MALICIOUS

PDF

64.2 KB Created: 2021-02-10 22:36:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 433022e1d46ea67fbbf91009112c9689 SHA-1: 2c6c7dd864d029c6832213d09e163054ba40d21e SHA-256: 7fea6766d0cc563fc35208bb7da71cd36a879101234bc41d1de2527da3edbbb5
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/aws?utm_term=aieee+2010+physics+solutions+pdf In PDF document text
    • http://bigpleasure.ru/izotope_ozone_8_manualegh60.pdfIn PDF document text
    • http://complerbnp.com/abeo_pure_performance_sockscgmx3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453740/normal_5ff6c534b0244.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385214/normal_60095fd4301c4.pdfIn PDF document text
    • http://rabota-plus.club/the_buzzer_radio_frequencyxr254.pdfIn PDF document text
    • http://216tilford.com/582339746531740e.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/minecraft_apk_chromebook1bj95.pdfIn PDF document text
    • http://legendbilisim.com/dineina_y_kinesina6njux.pdfIn PDF document text
    • http://xojitufos.66ghz.com/jogewavirodevumiwukisola.pdfIn PDF document text
    • http://mysteps.online/tasatelyvser.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484359/normal_5ff5a4de07864.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/croup_treatment_guideline95w4b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dizutobasuxolom.epizy.com/gregor_mendel_video_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/90664534428.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/healthy_food_guide_october_2019.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_off0000bfc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC0 5352 bytes
SHA-256: 56292d2512b5966b6bbcb5ef6c82f1e7872bdb584f5c425c33e0e0d314dd6bca
font_01_sfnt_off0000d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 9960 bytes
SHA-256: c82ada96c4c48f0e4cf19c8ca6b012d8341353c564818cf5a6ec417e53e8cd3c