Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfd6e9b415f13d6…

MALICIOUS

PDF

71.8 KB Created: 2021-03-17 05:25:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 655ac562a6cda15209bf55659e69bae8 SHA-1: 744ed610955ba3b46dd2aaaced3b61d410b0ea96 SHA-256: 4dfd6e9b415f13d65e9a4bcf98085e57442493be990ed5225cdc9ae027939ee9
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://baarspo.ru/123?utm_term=amazing+grace+piano+sheet+music+john+newton PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5fc5b1a1d02bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368242/normal_5ff310ed24856.pdfIn PDF document text
    • https://cdn.sqhk.co/surekepuna/QqhigfM/povabuwewad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417029/normal_602ae44312df9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5ffe93c42c4d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456687/normal_6041cdec2ea1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_603e4f47a7040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5fd62892cde7b.pdfIn PDF document text
    • https://cdn.sqhk.co/salosegebomi/OiUhdLD/phoenix_zoo_map_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481825/normal_600b51fb34fb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474446/normal_6003f650c3c29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386089/normal_5fe483076e98f.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/sywOhjX/sync_folders_windows_server_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/0ia6jaj/zombieland_saga_saki_voice_actor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464529/normal_5fd111ae9784f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5fe617a68e51f.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/c6a674d8-1e06-4030-84a7-f8d994b128d2/dixitisofowazelufoxepumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854e0b5f-d826-4782-83ec-0760cd9f202b/windows_network_commands_cheat_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06210a9b-8a42-425e-a6d9-a1f7ebf0eb6f/82212684102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98eb5e4c-dedf-43bd-8c1b-a97d5b189789/xodokas.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_off0000dac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC9 5520 bytes
SHA-256: ce49163914df62b02dd734c025940bc9ae80cbed903af8c97f1af980dc0f252b
font_01_sfnt_off0000ed83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED83 10708 bytes
SHA-256: bbd31239d4f0275198ccea2de6d647460769c133821dc5ae68a8992cdac45299

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