Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5d15fa430cfe28…

MALICIOUS

PDF

74.1 KB Created: 2021-06-08 17:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c489cfa9428e1f500bcf8ebf9cf375b6 SHA-1: 05b1a065f4df3e5c532d5f5211fe7d1e21a5ada1 SHA-256: af5d15fa430cfe28ee7baa789cadc81a7bce7450c00ef277a7179e098c1bb175
126 Risk Score

Malware Insights

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

The PDF file contains a link that directs users to a website offering movie downloads, disguised as a lure for 'Avengers endgame in hindi movie download filmyhit'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of this attack pattern.

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://cructi.ru/pbw?utm_term=avengers+endgame+in+hindi+movie+download+filmyhit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420036/normal_5fe98ea81c37f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483836/normal_6055308ea4c31.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/1eb7461e-c71a-4f47-8ba4-7d2e77e42bc5/75255682546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5efa951-27bd-413c-a527-d4b836d9691c/warcraft_2_battle.net_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/966446ea-261d-4071-b0ea-7083261cf356/xutemuvawevefosazo.pdfIn PDF document text
    • http://fixiguru.pbworks.com/w/file/fetch/144660327/71025550587.pdfIn PDF document text
    • http://bupataved.pbworks.com/f/how_to_use_leverage_in_forex_trading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac926c7-f372-4c1b-8c3c-80eb426d38f5/swann_4k_camera_system_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf315d9-f96e-430b-96bc-5ab1afd40048/fulozividupebizefed.pdfIn PDF document text
    • http://sozakuvepar.pbworks.com/w/file/fetch/144585315/rap_instrumentals_2020_download_mp3.pdfIn PDF document text
    • http://pafesudive.pbworks.com/w/file/fetch/144705072/xesaxatulogomok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de114002-3fd8-49f6-8a95-4dda20fc97e8/79561389987.pdfIn PDF document text
    • http://zajozote.pbworks.com/w/file/fetch/144443682/58578609885.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/betagovodakonorivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae0168ae-3448-461f-b558-7261954046bd/64362260996.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e229601b-a744-41fa-bc2b-f74375867798/saeco_incanto_deluxe_espresso_machine_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a18af2-e5a9-4856-ad53-bdc95b812d9a/kupifalima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f4cbba9-1c98-42a6-affc-203fb0dbc49b/free_download_alquran_30_juz_mp3_rar.pdfIn PDF document text
    • http://detomipipu.pbworks.com/f/bamodalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44cd4eba-154c-4e7e-8aac-d8b4816dccc6/glencoe_health_book_chapter_18_review_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d68199-e739-4976-ba4e-356d7f45b41e/8_ball_pool_miniclip_download_for_pc_windows_10.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_off0000e25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25F 5564 bytes
SHA-256: 787dfc064d913c8be8229158b21073dbc3e7214fe8e3e13382e2d1dc38e1cff1
font_01_sfnt_off0000f546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF546 10964 bytes
SHA-256: 6397f156f3fda8483283827bcf97e369a48b573316705cb422da8ea61e7c164b