Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ddf8ea3573936e…

MALICIOUS

PDF

52.0 KB Created: 2020-11-02 15:04:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d92e0f3f655e9c4c89ab89b150618d1c SHA-1: e556e2dd96269936328c817531df3a165b658c6d SHA-256: 89ddf8ea3573936ef8156c7692b0e9f75a9bcb3d019b8845844d0017bc1d4fa2
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?keyword=the+joker+free+full+online+123+movies'. The document body also contains this URL, suggesting it is the primary lure. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of a malicious URL indicates a phishing attempt.

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://cctraff.ru/strik?keyword=the+joker+free+full+online+123+movies In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f9e4c3ca3be3.pdfIn PDF document text
    • https://wesodopudo.weebly.com/uploads/1/3/4/2/134234684/tadivajavujal.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/5cb58f04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8a1a956f1d7.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/c40001ff-495a-4d14-86da-7281c69a5e32/vakujitafizenowexoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/autocad_3d_modeling_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/funciones_trigonometricas_inversas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e1df78-7f2e-4340-bbc3-f8f2d1d57796/exercices_sur_les_asymptotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd1e76a0-a178-4c82-ba10-aec0f6a8849e/fagudakudu.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/bangla_golpo_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/donald_bellisario_julie_b._watson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bab16c-0af3-4c3c-894d-0a11cb575106/gagojeke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9401449f-64c1-45ca-99c2-1e6cc6c26bd7/vugadibelabuziruxaritumu.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/algebra_1_solving_equations_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02554743-e6c0-404c-b4b3-240345f10fc2/tatesabidofutegi.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_off00008b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 5296 bytes
SHA-256: 629c14db90b56a893cda1f0422b9e1c19c800bac5efa84ffaa47a14613ef8e36
font_01_sfnt_off00009d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2A 11108 bytes
SHA-256: d234fa352606582ef02c1e531342d2f7769268e1950b4c2e1a43f82d00258804

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