Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f88aaef3baba6a…

MALICIOUS

PDF

50.4 KB Created: 2020-10-24 05:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 156efe4acfb3b6269960933893c26d4b SHA-1: d3a3503d7781a769102f118e9fce7f9c5002a1c1 SHA-256: d7f88aaef3baba6a7e33905ba820943b00647b8e3161152392e9ace591aa6f43
94 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 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 0.9999

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://ttraff.com/123?keyword=perm%25C3%25BCtasyon+ve+kombinasyon+sorular%25C4%25B1+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f86f4118e992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f878d69c5090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5f8d9137f314e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_5f8e067a685a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f932b5e73cb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f90abe9a4f72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f90e33847ecc.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/gurejab_jodadapa_suduzuvumud_xewasekewe.pdfIn PDF document text
    • https://luxexawasoju.weebly.com/uploads/1/3/4/1/134109261/xupexidut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/20628ae7-f2e8-4763-bbf4-b13e08567081/jubukuditufenusevoravena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a69de6fd-edf5-423d-8424-7a3c520fed89/93250354984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/722b08ce-e356-4fcf-b132-59170e46375b/daviridoluna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3043a412-4bc4-4eb9-ad8d-524456291631/robert_mantran_lexpansion_musulmane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f723939-a2a3-4912-81c6-97d8d8502bb9/exercicios_resolvidos_linguagem_c_funes.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/39254652480.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/eduardo_galeano_el_libro_de_los_abrazos_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/73232624176.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/savinakepot.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/buderus_logamax_plus_gb172i-_24.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D79 5588 bytes
SHA-256: c5bd23e8fe24517991a647abee24731f53ba44206a114f9ce537c33fd056aa92
font_01_sfnt_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 4716 bytes
SHA-256: aa7fd5392bdd102b336ccf59af93640dc8b29e00d5c9607041375baeee27515f
font_02_sfnt_off00007133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7133 11408 bytes
SHA-256: 7842e02352e2e2bdfd6408ee999133bd244666312e8bcba18a4f585bbf61fc85
font_03_sfnt_off00009491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9491 16616 bytes
SHA-256: b79bc77fb2db3de9490850c8d2065d08cdec80deeb187734fd428f038d86d930
font_04_sfnt_off0000aaa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAA9 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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