Malicious PDF — malware analysis report

Static analysis result for SHA-256 47cd3ba20486b5e2…

MALICIOUS

PDF

69.2 KB Created: 2020-12-27 08:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b3508633831a9f3caeb9c8580240d066 SHA-1: eb335a75d2ba1a65c4142ad5e1ab9b6bafe26477 SHA-256: 47cd3ba20486b5e21efbcc320543b6d5bee54c5720dca56aa2c93b6fd11307eb
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text that appears to be a lure related to job searching or local services.

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://traffnew.ru/strik?utm_term=interventional+radiologist+near+me PDF link annotation
    • https://cdn.sqhk.co/dimumaneda/ahUgfOU/shopping_list_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/M2dAwjh/mutawafegudutonaxiz.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/hdgeIZA/siren_head_scary_horror_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/roRSUgi/interesting_facts_about_mary_did_you_know_pentatonix.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/K6LNZif/korean_zed_build_s10.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/hgjheIw/infinity_insurance_office_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/dufadafakuti/hDgghhi/68927491418.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/jcgfibg/kasonirudunupalux.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/98319adc-622a-4b99-942b-a574c5eea57b/90912695276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e58013-6511-47c2-82d8-c249e8affd6a/59728565920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d9dce43-5150-4a56-84da-4858463db929/aiken_county_arrests.org.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c512385-974e-4ad8-8717-31c0dc9e568f/troy_battle_sights_tritium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e18f62-4101-4328-bcac-8ddf028a9da2/25195460815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e783ff47-40b4-4651-b4d1-f03cf8d523b7/loxupetimizadurupikowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9edd72-51fa-426f-a335-f1cc162bff50/pikmi_pops_surprise.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_off0000d401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD401 5144 bytes
SHA-256: a50d2c415a7e704c2f3f176ea2c3358ea656ffad4217ac718bf5f19e03c2b2eb
font_01_sfnt_off0000e56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56F 10012 bytes
SHA-256: b1ee823db0089db2319c3bd98959c98f09df6655192d50eb203f107929eadbfb

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