Malicious PDF — malware analysis report

Static analysis result for SHA-256 e008d43d9c5c222d…

MALICIOUS

PDF

30.9 KB Created: 2020-11-02 23:12:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5175dd514bf65439e02bbfb1c207a65f SHA-1: d8b3e76a619e0e39f3cf093686f79fbbd1bd6651 SHA-256: e008d43d9c5c222df59ab2b0d15ea1c69451584d1b94aaed038ec16cb157317d
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.cc/123?keyword=multi+step+conversion+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5f9a175eba88f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423452/normal_5f9c83448215b.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/c21d872d-bf19-4419-b27f-c2cf90bc7637/21502312550.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/literary_definition_of_epic_hero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a33c43e-c3da-4ca2-be5c-b8fcd51e29db/logoliwabomuxigig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/592b00dd-edf5-4811-be5c-25ab21fc6ebf/gubenawetanunezagasotoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/best_architecture_books_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/qutip_for_ears.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de9589be-91d5-40ee-8b8f-122468a35f1a/51210820510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/95482319742.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_off00003f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F7D 5032 bytes
SHA-256: df3bf428ff12b077111d655dd0b3456de662af0709c1c2350de9021f7b4db714
font_01_sfnt_off000050ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BA 8936 bytes
SHA-256: c55475bc2cca8a57089e6702fa8c8cdae6a79c6f69d215e8aaf1a4c1b255a7b4

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