Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf3537ece5e0240…

MALICIOUS

PDF

79.5 KB Created: 2020-11-12 16:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d5b44284084662129f9ddd10bc4e0040 SHA-1: dd71fdadf6a4bc81ea52a3c88f7f08307243dac9 SHA-256: ebf3537ece5e0240eb4f823ec41fd465ec4a5a5f7805cd295224bbd6598e21fe
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 0.9996

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://trafffi.ru/strik?utm_term=que+es+bioetica+segun+autores PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f9a6f0b492b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374380/normal_5f8a283be2ff7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f873eeb32c5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fac317e51b33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450731/normal_5fa6f21f4ed2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wokesabisevo/wenitewuvobutinum.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/rpg_maker_vx_ace_resources_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/ac_sweep_analysis_in_pspice.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/60573296724.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/company_profile_of_britannia_industries_limited_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc0d326d-bedd-40bd-88c8-a744c6addf06/bevif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bb9800-47a8-454c-9133-6c28aa2b581b/guided_meditations_on_the_stages_of.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/reconstruction_dbq_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/indiana_bmv_study_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 5016 bytes
SHA-256: d9cd5eb91070fdc9e7919f72ae97d88162a35b58c4dc99d97213910e440af7f4
font_01_sfnt_off0000e70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70E 11168 bytes
SHA-256: dfe7f654eea4b30019cd43f7ca887c1f74cefda38900fdced1f4bed1bdd5875f
font_02_sfnt_off00010b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B84 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off000120b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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