Malicious PDF — malware analysis report

Static analysis result for SHA-256 63eaa2012edabe6b…

MALICIOUS

PDF

73.7 KB Created: 2020-12-14 04:57:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60535cd25e01f7bce32f963deebedec1 SHA-1: 7a2f1d489bd94ab191d083143809e18b060b06a3 SHA-256: 63eaa2012edabe6b15a9c6f31bbfc8f2a8d4084a5282f75417f055b60c610509
96 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. No scripts were extracted, but the presence of external URIs and the overall classification suggest a phishing or credential harvesting attempt.

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://trafffi.ru/strik?utm_term=depreciaciones+y+amortizaciones+contabilidad
    • https://cdn-cms.f-static.net/uploads/4456135/normal_5faaad67ed235.pdf
    • https://static.s123-cdn-static.com/uploads/4481510/normal_5fc3a28392555.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wajibile/managerial_accounting_reports_examples.pdf
    • https://s3.amazonaws.com/vobuturinivi/simpledateformat_trong_java.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/ipa_phonetics_american_english_pronunciation_guide.pdf
    • https://static1.squarespace.com/static/5fc194132cf09257bd70d589/t/5fcca7031e1a4d7de1266738/1607247620573/ultimate_shark_simulator_mod_apk_v1_1.pdf
    • https://s3.amazonaws.com/zopenave/english_test_papers_for_grade_5.pdf
    • https://s3.amazonaws.com/wupagivoz/prolixin_davis_drug_guide.pdf
    • https://uploads.strikinglycdn.com/files/b8b59677-67db-46eb-8e69-3bb93eaca71e/lololovaritozekanu.pdf
    • https://uploads.strikinglycdn.com/files/62413a34-1c8c-4083-afab-b476dd3be6dd/babizafaluvab.pdf
    • https://static1.squarespace.com/static/5fc6858cd49dd124475b394f/t/5fd66246b1c3f31c7a81431c/1607885383938/wupiwujudaxupujev.pdf
    • https://uploads.strikinglycdn.com/files/952dc783-c78d-4202-9b58-b6479d735c99/xewuxebuzepetesuvegax.pdf
    • https://uploads.strikinglycdn.com/files/b1dbf99d-f662-48e6-b3e0-bbc97055e867/kukimojorefikimoxedima.pdf
    • https://s3.amazonaws.com/sanekufiwumafo/apk_patcher_windows.pdf
    • https://uploads.strikinglycdn.com/files/8c981121-e173-43e2-934d-bfa45a08fe9e/32116909269.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd0e.bin
427182c6a1a6b0f2fde5133cf5f016a9cad06a22e64918edb82a35f64fa100e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0E 5508 bytes
font_01_sfnt_off0000dfbd.bin
580721d7dd57b5af7348ecc643ed3f1b1db81780338ae18885253404a6bb2ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 10584 bytes
font_02_sfnt_off0001024e.bin
d781c508aaf473e50263a6aabc3f4161b7fa10724c54bb8d35addee38a7f1c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1024E 16164 bytes

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