Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a9b33a6c086755…

MALICIOUS

PDF

87.9 KB Created: 2020-12-01 14:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0376237692a3db66dae1f8a490a3cdf5 SHA-1: be6d097357ed6767eac0ff247dab09fcd94aeb64 SHA-256: d0a9b33a6c08675584fdb7093dc63d82d4475187d6efd3737e3ccfd6c0c1c6c1
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to 'trafffe.ru' was extracted, suggesting the document's purpose is to redirect users to a potentially harmful site. The PDF structure and embedded artifacts do not provide further insight into specific scripting or exploitation techniques.

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
  • 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=chevy+pembroke+pines+collision+center PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448727/normal_5fae2df3c2843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f9cf403aa423.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f920e04463ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446015/normal_5fc3d60e563a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f8a0bced1da6.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/5fbf4c22a97599144eeda1e0/1606372387877/47961728721.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd020479c08c7f2b9f98c6/1606222340640/one_month_to_live.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2983b9955c744b5466208/t/5fc45cfe3c02f22b9d98834b/1606704382745/43861485121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec0fc696-d7da-4c48-827e-e25cacd731ab/capital_cursive_a_to_z.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18edba8793968640cfc97/t/5fc5f8533570fb44d1d02f7c/1606809690050/36873997577.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/12071940014.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_off00011bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB4 5236 bytes
SHA-256: 84696336db9eab5216b994f28021bf59838e6fd3ed2ea6d55616746eceb2951e
font_01_sfnt_off00012d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5F 11268 bytes
SHA-256: d584af1824a136c84c3cdb5bab5b34b45fdd42321f0cdc2ffc0c6f97b0e15c6f