Malicious PDF — malware analysis report

Static analysis result for SHA-256 72056d18ee343407…

MALICIOUS

PDF

43.8 KB Created: 2020-10-28 02:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 12aba1db7396695d06a4e4a46ca51b9f SHA-1: 5a01e0853a2dbeac935c18dc65cf1d16daba2179 SHA-256: 72056d18ee343407cf06eb78bc61314249e254789ee933b5e52d9711fc9ddad5
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://ttraff.com/123?keyword=conceptual+physics+fundamentals+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393759/normal_5f953117d2bd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5f9529c3c800f.pdfIn PDF document text
    • https://lusukukupesakub.weebly.com/uploads/1/3/0/8/130815137/3043368.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/fewomo.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f91cc8c586bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_5f8fcb23dc4cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1251/7798/files/florida_aids_rate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/5188/1910/files/utsa_school_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/72803208829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e4d2f1e-d283-40fc-8784-f0d16c3091d5/53273545337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e01a4464-677e-43f8-afa2-d3edaf8d05eb/74915259632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2990a8da-ca8c-4a43-abe9-9a917a0c6176/xegobapepik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fd6d1b-8347-460a-a04f-3d38470c6083/14726326782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4bfb1cc-8376-4cd7-9ade-55795178e52e/rafeposibezexo.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/business_english_conversation_lessons.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/public_administration_syllabus_for_bpsc.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_off00006d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D71 5304 bytes
SHA-256: 48b544f38a17f717f2f234bf56157c96e638cb10cadba71fd37ff4dba48474d7
font_01_sfnt_off00007f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5E 10372 bytes
SHA-256: 6a283f87c33e123a722317a0d4396b0bc13249fdb3eaad16923e8ee29b693304

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