Malicious PDF — malware analysis report

Static analysis result for SHA-256 917192e538151a66…

MALICIOUS

PDF

35.5 KB Created: 2020-11-02 16:00:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e4a9f5b6e0803e0854a0237633c46773 SHA-1: d8d83974502a7e89191ab4a75556237570bb0ba0 SHA-256: 917192e538151a661081336a80e755be0d6e9c00a18f3668307d6ee495d9d64e
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.ru/123?keyword=nate+mack+elementary+school+henderson+nv In PDF document text
    • https://woxomeze.weebly.com/uploads/1/3/4/4/134498023/bifagewazefozenimud.pdfIn PDF document text
    • https://giwirakixa.weebly.com/uploads/1/3/3/9/133999144/a62877ba747543.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/roxebixa.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/foguxek_woxogonedifuk.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/1/0477/0119/6966/files/continental_mathematics_league_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/46464345406.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/the_bhagavad_gita_eknath_easwaran_download.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/vajoxesijukav.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/dichotomous_key_definition_merriam_webster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5873/1429/files/toyota_fortuner_2020_manual_diesel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7877/0848/files/tara_brach_radical_acceptance_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/10276423338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7772/0984/files/lojekewixilulav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df56ae2f-079b-40fe-84d2-d23b1bbf9f45/tugebiwewufuvegade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96576d5b-8499-49b4-8f91-9024368ad65e/exercices_corrigs_paralllogramme_5me.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_off00004b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B38 5372 bytes
SHA-256: 81b31767e19e8e15fe3aad89c1fd73df63157e40b423a3bcc4876993a3875329
font_01_sfnt_off00005d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D66 10608 bytes
SHA-256: 4f18978c466e328a9825f07bba71e58e5c3ecf356746b0210bcbdf053437e782

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