Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a3d9d418e1203a…

MALICIOUS

PDF

51.5 KB Created: 2020-10-30 23:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4c6e314444f12651aab774ef4a225357 SHA-1: 15dd63ac56dd66182033695d061e1c709859d5b1 SHA-256: 15a3d9d418e1203af25f7f1f72d507f8d7d811eda83b55fc7b1a9f20c1218301
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://gettraff.ru/strik?keyword=super+smash+bros+play+online+unblocked In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_5f92981c761cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5f9082df1403a.pdfIn PDF document text
    • https://lijonalorobu.weebly.com/uploads/1/3/4/3/134340538/6353333.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/e49cab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_5f8c8f875323a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f939ff39bf38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f9181ed82737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409421/normal_5f9c2768b6718.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/a7ef1239-d4f4-4974-af15-8b785aaa78a4/tirebopinekezopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9205/9314/files/fetape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6952/files/stamford_elementary_schools_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4378/9727/files/resetear_a_estado_de_fabrica_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74af49cb-376a-4e4c-b1ef-6bdec002de35/fevotokumelowajolafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1471/7095/files/the_magic_of_hydrogen_peroxide_free_download.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_off00008977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8977 5724 bytes
SHA-256: 791948d663295823f17729877bcec83dfa049a80510cfb6f5ca81b3524333bd0
font_01_sfnt_off00009cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBF 10672 bytes
SHA-256: 8f527e4ad9f3d1fbb4df1a9cae71b756fbccaa5caff4fc7e17743abeb60308b2