Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5793d775f6838aa…

MALICIOUS

PDF

75.1 KB Created: 2021-05-21 15:31:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c3cbe74138617f9b389605af34e79b4a SHA-1: 524d22b802389582699baed81ed0e259ccd33fed SHA-256: f5793d775f6838aa2f8c2075d05c987477902262ddb97b3193b47dcc711dc703
96 Risk Score

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 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/strik?utm_term=call+of+mini+zombies+2+mod+apk+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408588/normal_60407a5742e4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_605140d64ae4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365660/normal_60026a5e3b9cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463785/normal_5fc7bd64195aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467581/normal_605f828dd8e5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5ff9dc2db7e80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413368/normal_5fdc7b05f1901.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403685/normal_5fce4cc087518.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469623/normal_5fe47a7446e65.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/6825e6ea-9a0c-40d3-8e44-781c74511cdc/24071641551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91f1cab-ff6f-4811-b397-3a973388c376/roketegudorubuteganun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd31761a-df85-4891-9af4-7b87dcaf1ca2/suicide_notes_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ef8a1a5-3baa-416a-95e5-3eeb8dc11c89/science_crossword_puzzles_with_answers_for_class_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad65cf68-dcf9-4580-9eb2-3206bb97c457/72959315316.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/is_voldemort_snake_in_fantastic_beasts_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68705287-e418-4632-b10c-80d768059e3c/how_to_use_formative_assessment_to_guide_instruction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8355126-6e89-4d0f-875e-dca4e4a97b0f/can_severe_stress_cause_hallucinations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27214249-d5bc-49d0-9d0c-d69e64e96f0f/galudekipo.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/working_capital_changes_balance_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b07afb7-50a2-4876-bf18-146fc9b4eb66/la_historia_no_contada_de_estados_unidos_capitulo_10.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_off0000e6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F2 5524 bytes
SHA-256: 5e630f8165a7232f89d5c95d337f5926547b3c7b3b01094cd991b56adcb26d2c
font_01_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 10820 bytes
SHA-256: 0519c7d6d0f5b5da53bb0854dea2db21f927b70cc10d2c69d60bddb3ec0a0bcc