Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad29d67f27317763…

MALICIOUS

PDF

34.4 KB Created: 2020-10-28 17:34:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c4d99486075bc225d42b243771ff0cb9 SHA-1: df0bbeb5456872f528bebaa44cd7c0261ce96617 SHA-256: ad29d67f27317763fa16a50d1b1881e34e596d16eef61f0c58d31ab4eea739d2
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 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/strik?keyword=worksheet+works+coordinate+picture+pumpkin In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f94fa59cd753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8a8fc780953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f8b23ee47d11.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/vadogupefamomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f876f38c9455.pdfIn PDF document text
    • https://fumubesoxumus.weebly.com/uploads/1/3/4/4/134485348/fovavizudike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f876488c5e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f8982d24f09e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f95ec23c46f3.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/0f09d7fb-c7c6-4fcd-91fd-b48ba5c37d58/43626666475.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/tiyan_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c602c60-1d2c-49fa-9f79-0f9c5cfb911c/ejercicios_de_relative_clauses_1_bac.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/authoring_a_phd_thesis.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/araby_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97424a35-98bc-49c8-be3e-ff9a9588d06a/kobujuxegazumajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73416f64-54c9-4692-8080-38bc28c64549/19691002816.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_off0000498b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x498B 5452 bytes
SHA-256: 6c458e1467f963f4b07d64018a947ed12ceddae94843a1ea6ecd39185053c2ee
font_01_sfnt_off00005c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C08 9492 bytes
SHA-256: 187b35b5c8f86a90315f472ff0bd325bfb5fde3e96ccaf8b018855a1d2865b39

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