Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acfc16106f9da89…

MALICIOUS

PDF

39.3 KB Created: 2021-06-14 19:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4f365e5eb6fc5108e9b95bacdf33c4bf SHA-1: 854f1bd2bfd4ffd854d35be254503f5af46d4a74 SHA-256: 9acfc16106f9da8904bbc102555c891db3de8c23d11c97129e7f1898beedf2ac
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a phishing lure, presenting a screenshot to entice users to click on a malicious link. The embedded URL, 'https://inwebjor.ru/pbw?utm_term=bell+hooks+feminism+is+for+everybody+pdf', is likely the destination for this phishing attempt. The PDF structure and the presence of external URIs strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9484

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://inwebjor.ru/pbw?utm_term=bell+hooks+feminism+is+for+everybody+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375361/normal_6015365103392.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369324/normal_5fc9c12788a7a.pdfIn PDF document text
    • https://magijomolalol.weebly.com/uploads/1/3/1/4/131437319/zawewimijevod_vafatitunojilet.pdfIn PDF document text
    • https://susokeruno.weebly.com/uploads/1/3/4/6/134656617/6472312.pdfIn PDF document text
    • https://vijuvunido.weebly.com/uploads/1/3/0/7/130740607/gegemanitiruta_veloko_motimev_nenomur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_603861903fa05.pdfIn PDF document text
    • http://fesabijege.pbworks.com/w/file/fetch/144798102/shatta_wale_prophecy_mp3_song_download.pdfIn PDF document text
    • http://bawamotijeku.pbworks.com/f/3200532851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b426651-d996-4623-876a-12e13b62df5a/resound_phone_clip_app.pdfIn PDF document text
    • http://funesut.pbworks.com/w/file/fetch/144698187/how_to_put_echo_show_into_setup_mode.pdfIn PDF document text
    • http://furalagaposu.pbworks.com/w/file/fetch/144679083/can_i_make_an_appointment_at_the_dmv_missouri.pdfIn PDF document text
    • http://sowenux.pbworks.com/w/file/fetch/144768834/assistir_filmes_online_youtube_50_tons_de_cinza_dublado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffea6f85-8d93-4c2a-9342-32fe4815b667/40803680491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31c46cdc-8c3b-45f1-b560-df9c2da163a7/how_to_fill_out_a_basic_rental_agreement_or_residential_lease.pdfIn PDF document text