Malicious PDF — malware analysis report

Static analysis result for SHA-256 3799e045c52d3f0b…

MALICIOUS

PDF

16.6 KB Created: 2020-11-02 22:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e5111e952689ea2015510a40efb9b61 SHA-1: c6844a01f91a4a1c4d632280d94eadf1484dd873 SHA-256: 3799e045c52d3f0ba9a0cda41ef3ac2d1e2af70807f84c62f398794304fadcde
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is an image-only lure designed to trick users into clicking a link. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the embedded link, https://cctraff.ru/aws?keyword=imvu+apk+downloader, leads to malicious infrastructure. The document body text also contains this URL, reinforcing its role as a lure for a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/aws?keyword=imvu+apk+downloader
    • https://cdn-cms.f-static.net/uploads/4417675/normal_5f9a838d2434f.pdf
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5f9b02f5866ae.pdf
    • https://depufavekozumel.weebly.com/uploads/1/3/4/0/134017714/libowarasilunilino.pdf
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/wadubalevakawalako.pdf
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/lowagozameje.pdf
    • https://cdn-cms.f-static.net/uploads/4387241/normal_5f931375c972e.pdf
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/3862815.pdf
    • https://cdn-cms.f-static.net/uploads/4369310/normal_5f8917ea79fb8.pdf
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f870a6b93254.pdf
    • https://cdn-cms.f-static.net/uploads/4417222/normal_5f9a45ceb95f2.pdf
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/jopesiked.pdf
    • https://uploads.strikinglycdn.com/files/dd05885d-c5b7-4ed1-88e1-0b78215f0dc5/14652219882.pdf
    • https://cdn.shopify.com/s/files/1/0508/3004/9445/files/89959604893.pdf
    • https://uploads.strikinglycdn.com/files/5d0af2a5-e07d-43fb-b0c9-fa208bc21322/lifup.pdf
    • https://cdn.shopify.com/s/files/1/0501/5827/2691/files/whynter_arc-12sd_manual.pdf

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