Malicious PDF — malware analysis report

Static analysis result for SHA-256 50692cfeae392499…

MALICIOUS

PDF

68.9 KB Created: 2020-12-21 23:20:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9283a6fafbb3daca97f804830f052a79 SHA-1: f25252e18cf07c50bb3e6a9945a899accc22b1f9 SHA-256: 50692cfeae39249966509768a334e50bd2a335ec1940508766c7bd8779400206
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though partially corrupted, suggests a lure related to 'Steampunk movies and tv shows' to entice clicks on the malicious link.

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://trafffe.ru/strik?utm_term=steampunk+movies+and+tv+shows PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc58376e2fce462bcab2a8b/t/5fc9e07dee6dcf7e3634e29f/1607065727741/kubeserawix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3782c68612547ed6e4934/t/5fcae6559cf56e0e8b06b93a/1607132757449/modijofina.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b8d58ef7301f8b31fd81/t/5fc5dff35147b14804fe00ee/1606803443534/worksheet_8.1_similarity_in_right_triangles_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d097e93a-d5ac-486d-b0fe-9fa7a6dbcc8d/words_that_start_with_bi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee65f3de5e49b5291617/1606282854478/persona_3_kenji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a33b87b-f0b5-4000-9a9d-31d667366b3b/sowibupovosilavatekesu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceacedfba3275400764e3a/t/5fd66384e5ac582896224e4e/1607885701539/kayarian_ng_salita_worksheets_grade_9.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/gujebenesubefig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b1e034b-8f70-48b9-b375-8f151ef5cd64/tale_as_old_as_time_guitar_chords.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdc9511ee8ee932d441941a/1608291602385/church_tithe_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/39016633827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c740af97-4c02-4db0-8472-a7213cbc6949/doraemon_stand_by_me_full_movie_eng_sub_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/satellite_city_hall_honolulu_locations.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD078 5388 bytes
SHA-256: ce28fde5b63e2af2ed18550307153e500bb88e21562f522753b5d749aba0f4c2
font_01_sfnt_off0000e2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B9 10776 bytes
SHA-256: ffa34d2640ac295666eaea58488b62da40d2dbe06c2d25fed41c68c6c205c5b4

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