Malicious PDF — malware analysis report

Static analysis result for SHA-256 165967a4193f564f…

MALICIOUS

PDF

66.6 KB Created: 2021-04-06 15:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 54f010a6cc33a9cf2e375c7ee134073d SHA-1: dd66b192232f80bff1b5290fac99322c260fdf0d SHA-256: 165967a4193f564f74918fbe4ba44fa0f237bd090b6c30d61421b9000832cc7e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/123?utm_term=gcse+physics+acceleration+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472760/normal_603758ce28080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459629/normal_6054399234035.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/FCdiemf/carrom_disc_pool_free_carrom_board_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423431/normal_60041a3ba35b8.pdfIn PDF document text
    • https://cdn.sqhk.co/biziduwime/hfAGjhe/dreamweaver_templates_web_design.pdfIn PDF document text
    • http://lebuvowune.getenjoyment.net/pandas_select_row_by_index_column_by_name.pdfIn PDF document text
    • https://cdn.sqhk.co/rovovuroj/agdhdbx/lightroom_mobile_presets_free_download_food.pdfIn PDF document text
    • https://cdn.sqhk.co/xemuxebu/ibhamkA/magebedumutesamuf.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/gpgfAja/battleship_cast_name.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418401/normal_5fce5e1bda645.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/72b85ec6-722b-4cbf-9d80-72e9160b259b/11572843179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a69e22-a8f4-4046-a794-d24fc8225205/one_touch_ultra_smart_strips.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6543629-2ae7-4944-9a91-5f740ce895a6/what_happened_to_the_baudelaires_after_the_end.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71951033-b430-4fb9-84d9-19a0ffedd714/50620411336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43d82177-eb2a-4e1c-a26d-5cfed65730b4/kirujuwamajizokajosojo.pdfIn PDF document text
    • http://zepuwiz.atwebpages.com/lowitinagag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132f3f1d-a725-406e-a254-cabc87037b74/nivanif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c4d31ad-749b-4956-a457-e46345ff287c/35041100779.pdfIn PDF document text
    • http://sanugifop.atwebpages.com/used_honda_rebel_500_for_sale_bc.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC666 5312 bytes
SHA-256: 0b9b01d1a5c154b2b94fd40d8478f6881111c27679830d14ed95504770077bf4
font_01_sfnt_off0000d88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88D 10616 bytes
SHA-256: 359ce8d6bdb9996ae0dbbf6d834bd292ef4425435eec56e175cfd6ee486e100c

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