Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa559ad13d3f35ac…

MALICIOUS

PDF

65.0 KB Created: 2020-12-06 11:44:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 51539bfbd8b2eb0d5ca3ecd05aa1e1f5 SHA-1: 96207a28eede3393c0a6077ff6dfe9c02d2e2b1e SHA-256: aa559ad13d3f35ac293c233697e7f6b4a4570eef480fb02c45dd4d44a5691e9d
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=how+to+auto+assign+roles+in+discord+yagpdb PDF link annotation
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/310717.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_5fafeab8a1f0f.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/puretulenuza/ge_spacemaker_microwave_2000_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/thor_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/18410188551.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/bpsc_pt_answer_key_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/systems_approach_to_management_theory.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf590c173fb5383b997747/1606375692387/lejegabatubalufivujaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/excel_bedingte_formatierung_wenn_formel_wahr.pdfIn PDF document text
    • https://s3.amazonaws.com/padoragog/how_to_answer_a_to_what_extent_essay_question.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c759bf71053ccb28a36e/t/5fc51447e6d49a06bb33b959/1606751303779/pipitujitedomefexifimuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6166d0b-b729-4572-b3c7-b5c2bb22a393/cal_student_central_login.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_off0000c32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32D 5536 bytes
SHA-256: e2849cf4e48268ebe20824c15e43aec4e60afd9754d19b0d4898f07542dfea82
font_01_sfnt_off0000d61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61C 9660 bytes
SHA-256: 12d36e6d06eda0328cfb66b7237bd3b27e8b3993fa889bf652916f11649f114f