Malicious PDF — malware analysis report

Static analysis result for SHA-256 824fa05fb71b9465…

MALICIOUS

PDF

16.0 KB Created: 2020-11-01 09:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8ded97ca4bd8d37539ad7c7bf7122e5 SHA-1: c4371dcef714d5189179d1705a2d700b822463c0 SHA-256: 824fa05fb71b9465af6bd8ab9351e9708b20f1b82d4362bd8eb1ebf5f48165b8
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, containing a clickable link that redirects to known malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The primary IOC is the malicious redirector URL embedded within the document.

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://ggtraff.ru/strik?keyword=cool+slang+words+2020
    • https://cdn-cms.f-static.net/uploads/4407552/normal_5f9ac680542f3.pdf
    • https://cdn-cms.f-static.net/uploads/4424328/normal_5f97767d2a213.pdf
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f882ba9b3b02.pdf
    • https://cdn-cms.f-static.net/uploads/4403683/normal_5f94ed29600c8.pdf
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8a49c575b83.pdf
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/wepezuwodu-fivusosi.pdf
    • https://uploads.strikinglycdn.com/files/e94a2d7a-f340-4f2d-a42c-9837b1ff8473/54206645111.pdf
    • https://uploads.strikinglycdn.com/files/eaa38bc7-7824-42a1-897a-6ab0f9b0d4ed/simolafavisunepupebo.pdf
    • https://cdn.shopify.com/s/files/1/0486/2456/6432/files/65576827258.pdf
    • https://uploads.strikinglycdn.com/files/97c132d9-dc86-4435-8d62-5141eb8fdce2/50040270641.pdf
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/zavowavodogadanejizona.pdf
    • https://cdn.shopify.com/s/files/1/0432/7653/3916/files/leputesenilimitubik.pdf
    • https://cdn.shopify.com/s/files/1/0504/7762/9639/files/jesuwapovagipukegenesizep.pdf
    • https://uploads.strikinglycdn.com/files/02c06209-b289-4ec4-a033-4c71e14b5d6a/fapakelejesuposazuzuwarob.pdf
    • https://uploads.strikinglycdn.com/files/27857024-d5c1-4492-b676-d2f4d1b8b81d/fallout_3_crash_after_character_crea.pdf

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