Malicious PDF — malware analysis report

Static analysis result for SHA-256 73992fa4a9f35e2c…

MALICIOUS

PDF

75.9 KB Created: 2021-05-25 05:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 49303034b9c501c4dd4216196d802dbc SHA-1: 103038711b4a8c3fbd84b956e983f2e92422bd48 SHA-256: 73992fa4a9f35e2c67f3c19d27fbb40d35b610ab9bd9b3043c3b51c1ddb67622
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 0.9999

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://leonvi.ru/strik?utm_term=shaandaar+full+movie+download+480p+400mb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457318/normal_6061b2f0e8a71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_6011f644c480f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_601c7e8fbeb87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_5fe8681ea27e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_5fd642f628170.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/9cd7b5c2-35d9-4e75-aad1-872bdac1a4dd/pisiroserobugerixowilore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/726e4915-42e5-4a2c-b1a4-28915b072cce/can_any_router_work_with_fios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3735c0f6-7467-4d1b-827a-d0579da5e68f/evil_genius_uber_trap_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd77d9c-8c1b-4656-8367-854052af1bb9/simplicity_regent_ex_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/jajudevewabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/253eccca-138e-44b7-9e01-533d8e0979ac/texenenojutotazowewekexi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/675e0316-36af-48a2-9d4d-ff5780353e56/how_to_get_entry_level_supply_chain_job.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/aha_2019_cpr_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8386ff7e-0598-4ce0-8c45-43a2cdaa00ec/65979590403.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/power_bi_report_server_data_gateway.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/puppy_adoption_application_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50f30cb8-b71a-4469-9fbf-ee318c61f3c4/befunamidilujemanimez.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_off0000e9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A6 5924 bytes
SHA-256: 4962a34c45a4ccf6f8fb4b7cae82bfba208967c5c01946a37d8fcb5f1060d8b7
font_01_sfnt_off0000fdbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBC 11092 bytes
SHA-256: b3f08f294b22d6f2b45e87525256e15623254ca9e4e1b7d3b108eb9207095cfd

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