Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cbf51024978881…

MALICIOUS

PDF

73.1 KB Created: 2021-03-10 18:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6ce60bbde54e2a32d3ac16c03ba963e3 SHA-1: d88a5aff73f5cc14e23c4df576d2d843f33c19b8 SHA-256: d8cbf51024978881edd92a1d73b4457e3f28a43f0c53f44a55a8f6fc39e47eb5
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=animal+crossing+new+leaf+rom+citra+deutsch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419628/normal_60482415c6b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_602e471d3aba7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417808/normal_5fe3c8d11e48e.pdfIn PDF document text
    • http://dkblogin-de.best/97241861134b3gtu.pdfIn PDF document text
    • http://nowojamedomi.22web.org/sutebegotobagazafaxaba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381543/normal_5fee0ce62ac1b.pdfIn PDF document text
    • http://getcabinets.xyz/is_krav_maga_legit_joe_roganxxiqx.pdfIn PDF document text
    • http://interior.estate/stock_markets_today_tsxkaax4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477864/normal_6035f5f31f447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_603373e236e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476582/normal_5fe7cfb12ddc3.pdfIn PDF document text
    • http://boothattendant.com/dow_jones_market_report_todayx11iy.pdfIn PDF document text
    • http://bluebadgeapproval.com/xulunirujewexabasazet2tesu.pdfIn PDF document text
    • http://mutuvukawawe.22web.org/solar_system_photo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401519/normal_60435bc72874d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf0570e-24fd-479b-af42-c540564c6afb/folet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea92078f-aec0-47b3-9097-6312e211f5c8/feberasa.pdfIn PDF document text
    • http://towewewavagefem.rf.gd/islamic_baby_girl_names_and_meanings_from_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af4cdf6-328f-4d73-af57-e0c7d9fc9746/zoburolexaramesawubuxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c094c8b0-42c3-43af-8972-51a5ab1aa63c/derechos_humanos_en_mxico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd180dce-62c8-4f6f-b2f7-4e59a3b6201f/calor_de_combustion_octano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043f8f33-5e63-4592-bd70-a7080e1ac3b3/python_learning_course_free.pdfIn PDF document text
    • http://nekonopevijaj.rf.gd/the_complete_jazz_guitar_method_intermediate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebdede0a-c870-40c2-ad78-30439f96d2d1/plane_shift_amonkhet_dnd_beyond.pdfIn PDF document text
    • http://wogurep.epizy.com/61077591686.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_off0000e0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E7 5516 bytes
SHA-256: 3c4f25ea3c42999dc33f138365b63e92eb81569aae869ce993a6ea6f02611867
font_01_sfnt_off0000f384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF384 10400 bytes
SHA-256: e236732064828547184a0963762f197b89c20f451a9470f3302d85b386ea73ac