Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd25f92258f18be…

MALICIOUS

PDF

57.8 KB Created: 2020-11-01 07:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 618866ff807b610e137cf644d9053d6b SHA-1: b6bd51416c47777cdcaee982cf25e4deb60fc733 SHA-256: dbd25f92258f18be8f33a2671c005aa29eee4f8061b9990bc85735536988fcc7
94 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/aws?keyword=che+faro+senza+euridice+pdf'. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/aws?keyword=che+faro+senza+euridice+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_5f92de70cb863.pdfIn PDF document text
    • https://dowezepuxaku.weebly.com/uploads/1/3/4/4/134463959/9928ab8b7.pdfIn PDF document text
    • https://pelixenebedevo.weebly.com/uploads/1/3/4/3/134338689/sesazevowo.pdfIn PDF document text
    • https://watuwejaxor.weebly.com/uploads/1/3/4/4/134437052/9fe95e438fa7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f9b6d58daafb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f8768d54f321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413016/normal_5f9e3f6cd202c.pdfIn PDF document text
    • https://gidaxejopof.weebly.com/uploads/1/3/4/3/134305554/9675148.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/ganubatebedoxez/i-_stat_handheld_blood_analyzer.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/pojudanot.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/nobesukemaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/31761139623.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_off0000a317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA317 5168 bytes
SHA-256: 9b593b2d0b0c581c85628ce5abaae06003a19547f0e28aa196e56a4760739c90
font_01_sfnt_off0000b4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AA 11516 bytes
SHA-256: d5d9411ddc01fb662f808d45079f1b6d040458aa75fe477fe9f232323347d234

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