Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9eb9fac1ce5009…

MALICIOUS

PDF

94.5 KB Created: 2020-11-25 16:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4474fadafb65a31bcebf4ac2e583a914 SHA-1: 99a975e5695e92cafdbabd7c01854a09134799ed SHA-256: 9d9eb9fac1ce5009be714fd62a202c086cad4ec432119b6e57e47ff9abf0c973
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=bluffton+ohio+school+district+map'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=bluffton+ohio+school+district+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4495684/normal_5fb4632a830db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454807/normal_5fbbc19bb0865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_5fba4e647a825.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/zabejuvijolu/90175454731.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/4958870230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a9a2754-4c0f-4717-b5b4-f9668ebc64d5/3087202549.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/34075063013.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/masuxuvuk.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/jammu_university_6th_sem_date_sheet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/43170321675.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/create_multiple_duplicate_sheets_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/mavuzenif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4322e955-4fcd-4ea5-aeb2-3a70938fa706/66723742027.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_off00013570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13570 5444 bytes
SHA-256: c92d8cd8bca8e93b8329877658cc4799bc46714e9c6913e0501195f1ef775b3e
font_01_sfnt_off000147ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147CE 10952 bytes
SHA-256: 01d609b584451691129b02e888b1bb56a1d312c2f5bad043062f31779a3294da

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