Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3fc6f08c8d94e78…

MALICIOUS

PDF

73.3 KB Created: 2021-02-28 13:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c7ebf7edca53392e0afa86d8c2f34a9b SHA-1: 0d31054168a0e3709d068347c5e658ee35e0691d SHA-256: f3fc6f08c8d94e78fdd74b9868672da15ec7051e128c41795edf2889a766b612
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The presence of PDF-specific heuristics and the ML detection strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/wix?keyword=warlings+apk+mod PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388157/normal_601749a3b97e7.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/jriTiev/muzalewokagexugovenekal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_60354466c2bba.pdfIn PDF document text
    • http://tomogorman.com/the_promised_neverland_isabella_lullaby_sheet_musicmj9jt.pdfIn PDF document text
    • https://cdn.sqhk.co/kepigofunet/50jhrlH/shark_tank_running_shoes.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/jolunenafobuw/logical_fallacies_quiz_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/vorikananowaresijibula.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/what_are_the_adaptation_of_rainforest_plants.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/fofipenukaku.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/49606314340.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/islamic_calendar_2018_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/pabemavepinoxotokewutigo.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/63748094376.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/excel_formulas_nested_if_then_statements.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_off0000e341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE341 5356 bytes
SHA-256: 366c1533d8c8ee75db29106d208a167b0e3cdb98a413110c0f7b505093842a9b
font_01_sfnt_off0000f574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF574 10252 bytes
SHA-256: e2171199ac42cdcc574efc9ff59e4f946b945c30a9b1f1fa92b47d533df08ccf

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