Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f0aeb0632c5412…

MALICIOUS

PDF

62.3 KB Created: 2021-02-19 22:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 7ea21a2e2801ec404fa31adeda3046dc SHA-1: b3e2059752ea9d45c91286d79b74751553433dd0 SHA-256: e2f0aeb0632c5412cfa2afddf5a1681303128e06e0c95d2ed3dbc4ca3557f9aa
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that redirect to various domains, many of which are associated with link farms and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs and the link farm heuristic suggest the document's primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8795

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://jottigo.ru/strik?utm_term=denon+avr+1613+app PDF link annotation
    • https://cdn.sqhk.co/jolodovi/ageThcG/free_daily_checklist_template_word.pdfIn PDF document text
    • http://coins24h.com/fujoxideweziburosedexerxb4ak.pdfIn PDF document text
    • http://arthromedro.xyz/basic_algebra_worksheets_and_answersz4y0x.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/gjdjehh/68674447821.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/jJ9gb7e/61796476869.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/yT6igsw/nozasigube.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/heP9bF9/goodreads_choice_awards_best_mystery_thriller_2017.pdfIn PDF document text
    • http://dontbeshy.xyz/transformar_celsius_em_kelvinm60la.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/ggRZuia/jaxuvepebi.pdfIn PDF document text
    • http://teaapple.space/denagirajogevinirosedesolbf18.pdfIn PDF document text
    • http://info-pages.ru/headache_diary_printablea5f0r.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/rapid_typing_tutor_for_pc5dzb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jovekus/brassey_s_book_of_camouflage.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/short_professional_bio_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/80632977830.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/forces_and_motion_study_guide_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/mozazolupibolorojusotiw.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/aashiq_banaya_aapne_emraan_hashmi_song.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/vuxewitazej.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/69792460904.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE996 4692 bytes
SHA-256: 064e9243c11413a3e4a6b32933acb53ab6fe929852502606a64f767513ebaaa7