Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9d7885fe73cd04…

MALICIOUS

PDF

103.8 KB Created: 2021-03-25 16:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: acac5f4d9d5a3b9ceea6b7ec823beb9e SHA-1: 7e7acbb2b53fb4a49c9f02d5ea85aae2ad9ef434 SHA-256: eb9d7885fe73cd049af24847169f76adf9c1eeb3602f15a1f40eac70a73b60cd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware download site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Craftsman yt 3000 replacement parts', suggesting a lure to attract users interested in such items.

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://seumenha.ru/strik?utm_term=craftsman+yt+3000+replacement+parts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475999/normal_5fc872ba6c2ca.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabure/SOjFiby/68587275188.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/Cbjddjj/brain_games_download_free_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/6lgh2mj/3dlut_mobile_premium_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454807/normal_5fe235f1414cd.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/sje5hgi/18923338052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_5fdc47a5b2bd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420752/normal_600b353d908d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386086/normal_5fd6e623b7d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_60292a66d4e48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459791/normal_5fe55b88810b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wojibikifi.myartsonline.com/95548134534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826b27f7-22e3-45e6-874b-9470a837a0ce/buenos_dias_princesa_blue_jeans_sinopsis.pdfIn PDF document text
    • http://jubogaju.atwebpages.com/75467691980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7835b3e1-23ce-4917-b31a-bc9c9036c7fe/how_to_set_alarm_on_armitron_sport_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/672e40da-b5a8-4005-95ce-e20a24857944/trig_functions_derivatives_and_integrals.pdfIn PDF document text
    • http://widifusi.myartsonline.com/fidobiwosedixokokitil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630c03ce-f4b0-41c4-8ec7-8f65659b2aaf/xakisok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c2f6cf-a187-4b30-ad71-fe5bc6263c42/10805037765.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0628691-489e-4693-a71a-c717738659a1/war_of_the_worlds_2005_4k_review.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_off0001588c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1588C 5476 bytes
SHA-256: 16254fd243b2958dcb575cb5687feec8ce0cd6a8fc25d183b426c61041f74ab0
font_01_sfnt_off00016b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B17 10876 bytes
SHA-256: 8e9da68fb2b0f2623715daab6389ee6d1fed9e53dd06ecbc1e0103358c12e478

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