Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d3e40d3509c08b…

MALICIOUS

PDF

66.7 KB Created: 2020-12-18 03:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 969920c2f881f23172519c69cfa5b186 SHA-1: 87a2b06ba9ac596456bbb944e3bdbfbfbb3cd704 SHA-256: 30d3e40d3509c08b8a9b244ca1bb7378893f448ab438fa909d948f26c09054c3
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely used to host or redirect to a malicious payload. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=coding+guidelines+c%2523 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8be43d6053b.pdfIn PDF document text
    • https://xowuxuwakewobi.weebly.com/uploads/1/3/4/8/134853014/5c4a7cfdb457d.pdfIn PDF document text
    • https://vefutafefu.weebly.com/uploads/1/3/4/8/134882527/melonivudagel_nuvizurujet_worikul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf61773c6ccf69f3562e7f/1606377849254/67653149379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b50e1fe-e50f-47cf-b5bb-116b0fa4ff35/89331922451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66a75c13-f44f-4de6-b104-d8ee853a059e/anamosa_state_penitentiary_museum.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/zotatajesa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf05a3f75b166439a1eed/1606283358358/head_first_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b061a3f6-2b1e-4523-8fb8-44ae2d7b0308/nawadinorasaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa19f4a6-2917-4771-8898-74583d22b3f1/rakef.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/weather_report_pune_satellite_image.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/mumiwadamulisokub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe75213570fb44d1d5ee1b/1606317350958/basuguzunetobalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f75a1ecf-e497-4623-8c8e-c2f55abf3678/amana_dryer_ned4600yq1_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/sevubevogemuwad.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_off0000cb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB35 4708 bytes
SHA-256: 1b35012a542e3397b4fc03698679ae9fc1ae38601c86ac8a4cac7c98c738693d
font_01_sfnt_off0000db4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4F 10276 bytes
SHA-256: 06c1d34a311327b0e1efb49d27808363c70af93e792032f9de261f9e64dd2708

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