Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd648b279dfec5c0…

MALICIOUS

PDF

45.1 KB Created: 2020-10-24 02:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f22d15f40a7fbe6b9b81b6697b2d654b SHA-1: 2c23b0a34f29d2c0989dff41eb0b7099e2ae10b0 SHA-256: bd648b279dfec5c0dc88e2178a0727ba5eb95aa509e02819f8d3abba3314bec0
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://cctraff.ru/strik?keyword=%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25BC%25D0%25BE%25D0%25B4+%25D0%25B4%25D0%25BB%25D1%258F+%25D0%25B1%25D0%25BE%25D0%25B9+%25D1%2581+%25D1%2582%25D0%25B5%25D0%25BD%25D1%258C%25D1%258E+2+%25D0%25BD%25D0%25B0+%25D0%25BE%25D1%2580%25D1%2583 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8819b82ab94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8c3e298db14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f87863faebab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f9091f60dbfb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f87d7f8a0faf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f8e7eb14c226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8a8509a4464.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/1/0481/7498/9479/files/gastro_cny_patient_portal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0250/5627/files/foniruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4157/8405/files/nombre_de_dios_durango_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d53c5b-cd70-4936-ba1a-49c1d147c2f0/lesefomurobukod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a846dc0c-a190-4a0a-8558-115ae727f3d6/85734434418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcd4bfb9-214b-4b10-9fec-3988b3237858/sims_4_custom_food_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/vipexitofawajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8081/9902/files/cara_download_game_roblox_mod_apk_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4235/5365/files/44224501990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/raycon_e50_earbuds_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/123670af-81c7-4493-aea1-09a90d12a019/puwaporop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/538bdb7b-71d2-449b-83fe-32d9fdec6fff/werosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aca386e6-37bf-4f83-a059-75c2f13ef303/43631224978.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_off0000632a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 6236 bytes
SHA-256: 21a1ff215524125b60c8f8d9e3e4c21d66b6d9dd0b8a01587bbb1431f61d0f75
font_01_sfnt_off000077d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 14176 bytes
SHA-256: 8053ac09ac6f76bcb589af198a2a6724a95cfc0bec4400fd54674b448a991f1d

Open this report in the interactive analyzer, or submit your own file for analysis.