Malicious PDF — malware analysis report

Static analysis result for SHA-256 941c5bbe315d0f77…

MALICIOUS

PDF

26.0 KB Created: 2021-06-01 09:10:31 UTC Authoring application: Softplicity First seen: 2026-06-12
MD5: b3661864ee028e40234e9b4956ba70ae SHA-1: 88562a4dec6566ab984ad70ebd3cd966a5ce6e23 SHA-256: 941c5bbe315d0f77a29edde2801e8efe6a257f0539dc0dada699feadcdf50423
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a doc body that mimics a service manual, with a critical heuristic firing for viral-video clickbait linking to a suspicious host. The primary URL, http://def.lods.icu/dls.php?q=Daewoo+Nubira+Service+Repair+Manual, is likely used to serve a second-stage payload. No scripts were extracted, but the PDF structure and embedded links suggest a social engineering attack to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3264

Heuristics 4

  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://cdn-cms.f-static.net/uploads/5257636/normal_60b38398000c0.pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/5257698/normal_60b38a9088a41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257607/normal_60b386a2c9212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257594/normal_60b381cda77e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257668/normal_60b386b085fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257577/normal_60b3817f35f2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257656/normal_60b38be9cccdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5257653/normal_60b38498eaf99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dbc2e0fea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd175aa74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd4aa1f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd057ebee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd5c72cc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dc486df5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dc388cfe8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd28814b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/5262297/normal_60b5dd39bd2cc.pdfIn PDF document text
    • http://def.lods.icu/dls.php?q=Daewoo+Nubira+Service+Repair+ManualIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text