Malicious PDF — malware analysis report

Static analysis result for SHA-256 24933e2d0b04b69a…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 00:59:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0592a06bd42e9ce5427fafff04f5584f SHA-1: b18344fbe3f90f0f539cf1b74279a1c13775071a SHA-256: 24933e2d0b04b69a3d6ebc146543d15f9f2412486f1cee87233c3ffe9dfbdd08
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URLs, many of which are hosted on disposable domains or link farms, suggesting an attempt to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs indicates tracking or campaign-related activity.

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
  • 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.
  • 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://zajinet.ru/123?utm_term=intellicharger+i2+red+light PDF link annotation
    • https://cdn.sqhk.co/xovatagemi/gi85hgz/mosquito_sounds_app.pdfIn PDF document text
    • http://kopolebukerone.iblogger.org/boss_katana_50_manual_deutsch.pdfIn PDF document text
    • https://jelebemurufipo.weebly.com/uploads/1/3/4/4/134442628/2307633.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/how_to_update_ti-84_plus_ce.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/vshfibH/95903153807.pdfIn PDF document text
    • https://cdn.sqhk.co/gojelonub/SQSBtge/jw_library_app_free_download_for_windows_10.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/fitusi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuwexugebukutim.rf.gd/dukaralemufeneleba.pdfIn PDF document text
    • http://livirava.atwebpages.com/92545000876.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/ranidiva.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/dyson_dc25_animal_manual_instructions.pdfIn PDF document text
    • http://vaxilokenifak.epizy.com/solving_and_graphing_one_step_inequalities.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/buniruw.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_off0000e176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE176 5092 bytes
SHA-256: 03e26110c69577c3677c9ceb1f17919fa0c7669dd005cd9c42724b668021ca74
font_01_sfnt_off0000f2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BF 10440 bytes
SHA-256: 9ccbc4e30f39728eb045467f57798e3ccb12041266d91296942c21e8dbb120df

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