Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b91dcf0e60bd62…

MALICIOUS

PDF

74.9 KB Created: 2021-02-17 06:06:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3b879f61621ca373e375abb4a82c742e SHA-1: dc355306ed49fd124608b51d69d36a963b1aeeef SHA-256: 76b91dcf0e60bd626311878cdefa0c47ed980b8e5a3a1a5f029c576814de719b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=how+to+reference+made+easy In PDF document text
    • http://pasozabijegigus.iblogger.org/basic_shapes_free_worksheets.pdfIn PDF document text
    • http://fiselijuduguge.iblogger.org/detective_malayalam_movies.pdfIn PDF document text
    • http://hightrade.club/bailando_english_version_video_with_lyrics857pp.pdfIn PDF document text
    • https://cdn.sqhk.co/wobivada/ifPiejf/wiborekosupijewazurorezu.pdfIn PDF document text
    • https://tupenozisi.weebly.com/uploads/1/3/4/0/134012303/dozomajim.pdfIn PDF document text
    • http://kernig.pro/38639193810ac7vx.pdfIn PDF document text
    • https://nezozavigarej.weebly.com/uploads/1/3/4/7/134727028/fdb95bc3fe6a3.pdfIn PDF document text
    • http://matteset-spon.space/464951259022f3m1.pdfIn PDF document text
    • https://rovijekamiveva.weebly.com/uploads/1/3/1/4/131437241/lubizoxomokizo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492555/normal_6018ab42136d8.pdfIn PDF document text
    • http://bonifacy.site/female_football_reporters_bbcw4z54.pdfIn PDF document text
    • https://tunajixawovu.weebly.com/uploads/1/3/0/8/130873758/5884832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_60144648baf6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafeseg.rf.gd/76280130498.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/kosegepima.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/convert_bootstrap_template_to_drupal_8_theme.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/death_of_a_salesman_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/nccn_guidelines_for_lynch_syndrome.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_off0000e893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE893 5288 bytes
SHA-256: e4300bfaf8b4377f4dea9b6dae2a280cdb792092b11b73a1c715949a328f1ce2
font_01_sfnt_off0000fa8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8D 10660 bytes
SHA-256: fdf6b36534b726a8a695aa14f5694b19c293ce560a061452a8fdc76683405228

Open this report in the interactive analyzer, or submit your own file for analysis.