Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0031058cebc4313…

MALICIOUS

PDF

46.8 KB Created: 2020-11-04 19:40:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 193bc2f8c0ee6dcc746bbfb3929e65d6 SHA-1: d567ea2bd7aa3c8d0695be79624363d30474bf0d SHA-256: f0031058cebc4313828c1c3aca05bb5e837c009ed421cb39fe04832686a85158
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=hindu+mythology+stories+for+kids In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_5f993b610a93a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374181/normal_5f8e4742785da.pdfIn PDF document text
    • https://fexatawolev.weebly.com/uploads/1/3/4/4/134445796/991110b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f872f1aafcb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_5f8d90b69c290.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/mekarafurasumi_posubawadokab_bewabes_jufulijoke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tuxutedi/social_studies_standards_illinois.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/96190570828.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/arrival_pelicula_completa_en_espaol_latino_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/circle_of_fifths_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/fast_food_fundraising_cards.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF1 5120 bytes
SHA-256: 7f8e82d68f87f273caf1da1b8dc6fbbaa6ae8cd69cf8b4cd301ce887e9fec83e
font_01_sfnt_off00007e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 9936 bytes
SHA-256: c50de8f5160fb3251d5470c6b11c28b1d82fe03d8a19cf2a5b22f72ac5eb9e9e
font_02_sfnt_off0000a036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA036 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34