Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc9f0dd58cf9964…

MALICIOUS

PDF

42.6 KB Created: 2020-11-02 08:02:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d061a0e4398c7b0e6c7f35c814b7b206 SHA-1: d66f873eb398fef388289fb2f0d414b9184e951b SHA-256: 2fc9f0dd58cf9964a99a745394cba8715342fe9c82539db4d0a6f1ea44c31f2b
94 Risk Score

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://cctraff.ru/123?keyword=30+days+on+minimum+wage+worksheet+answers In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/9839233.pdfIn PDF document text
    • https://gidepojijozi.weebly.com/uploads/1/3/4/2/134235950/kutekegut-lagiguduromi-kerefigimadisit-wopetugififubar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392439/normal_5f8f61c6a653a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f9c987635485.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/bytefence_license_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/2107/1021/files/the_photograph_2020_free_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6c13fd-dd5e-4da0-9a5e-c42a18de38e6/setiger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6027/2808/files/sivisorojewes.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/brothers_karamazov_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e40f97c6-d34a-4f4c-b4f9-7d2ea380b00c/grave_digger_rc_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0038/5695/files/bailes_en_mazatlan_sinaloa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4794/3843/files/kewupopotoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c0e17b3-2856-40cb-b03c-c32ae8b5747b/likozifixuv.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_off00006503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6503 5676 bytes
SHA-256: f9e0ae863fba4cc98da0565d205eb5ff00493d95e1a02226f54b2c639f1ace96
font_01_sfnt_off00007844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 10908 bytes
SHA-256: 7f292097294438878b472125a6e61b75c469d27e07bca0c9fac3f219f8c5cfb0