Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ca1b4e3cf35d23a…

MALICIOUS

PDF

66.7 KB Created: 2020-12-14 16:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7bd94ec249a9ad2bf8f7b87e53f61c66 SHA-1: 7f48d5cba4df0294e2614694cd958e2f8200cfca SHA-256: 1ca1b4e3cf35d23ac0a34909d2bc889c0a080cbc31bc8a0dd8686e16abeb15e5
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'traffset.ru' was extracted, suggesting the document's purpose is to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and the presence of external URLs are common in phishing and malware delivery schemes.

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://traffset.ru/aws?utm_term=semi+formal+asking+ideas PDF link annotation
    • https://vikowawenoso.weebly.com/uploads/1/3/4/7/134744374/7a55c43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450624/normal_5fd1a72370f86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/fossil_evidence_of_evolution_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1a921df132613bbc31d79/t/5fc8044592edec3c91f3552b/1606943813835/survival_horror_zombie_games_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/49316704500.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/mutated_zygomites_osrs_fossil_island.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/cell_phone_hologram_template.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/sarracenia_rubra_ancestral_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/9139706427.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4fa93affbf90a6604a896/t/5fd670d172b1137fa9784757/1607889106047/81969386732.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58376e2fce462bcab2a8b/t/5fc8889fb0f45b2a3d2846fd/1606977695876/cartoon_sounds_app_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf99f3fdc31513a0f6d48/1606220196123/bear_canyon_website.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/bollywood_songs_320kbps_free.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_off0000c9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E8 5392 bytes
SHA-256: 4448d41b058dddabc511acc9671a2f3fb9c74d8d1af9a47443d44a8c40252ce6
font_01_sfnt_off0000dc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC25 9976 bytes
SHA-256: 99fbc8bbfd3cc1c5530bd8cd192c0d7182043afe999f8f0db2e23323e1aa51ee

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