Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e97d24a621e2dfa…

MALICIOUS

PDF

68.7 KB Created: 2020-12-11 00:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f261a282e253b1e7f45fd2847156cb2b SHA-1: df5016e182fffcb56f02eccc008b93d2f06579df SHA-256: 1e97d24a621e2dfa1489d2a1cb3505e0e2e833f469a7979eb906070c07cf0054
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. 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
  • 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://traffmen.ru/123?utm_term=how+to+change+the+battery+in+a+cochlear+implant In PDF document text
    • https://static.s123-cdn-static.com/uploads/4390069/normal_5fccc6ec4facc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481662/normal_5fb8cf71ee8e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e31602a3-c271-4d06-9a6c-70cc82449930/22916034329.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/naruto_sadness_and_sorrow_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/53332261717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43b7e120-a9b5-45ee-a219-ffca4c7fa740/ruta_de_mejora_escolar_primaria_2016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ac042e537a05ef314d38/t/5fd153e7957ee608da824e5e/1607554023814/dark_knight_rises_bane_coat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a369ab83-7048-4435-adb9-02a6dc46765e/musazaludejafotefexanaze.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b590c30a162e0c73766b/t/5fd2115c5e090321cab9e583/1607602524893/81744807549.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe119f61e25426e100a725/1606291872060/i_will_let_your_heart_be_my_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/xiwidod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c87d3dfdd95b60d47c17/t/5fd06df20c0c9b10ab084292/1607495154483/ula_launch_today_youtube.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_off0000d071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD071 5464 bytes
SHA-256: ab3097384b986c3ca3b427faca83c77bcba10bf25c11ae2ba7265d263b316656
font_01_sfnt_off0000e2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F8 10188 bytes
SHA-256: f4d6706f9134685e26691065ff054d8eb66e7c26801cbf3f6f53d4b4d7c3ea69

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