Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3dfd8a7a8e753b2…

MALICIOUS

PDF

81.8 KB Created: 2021-05-21 10:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ebe46038e78937991095f1618945348 SHA-1: 6518fc267948520f28dca73b3796347e26c5d573 SHA-256: a3dfd8a7a8e753b29ba9716cf137d18d166c2b33b8c7a97eff91e57b199b40df
98 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.
  • ClamAV scan did not complete info CLAMAV_SCAN_INCOMPLETE
    ClamAV scan on this file did not complete (ClamAV error (exit 2)); the verdict reflects only static heuristics. The result is not cached so a later submission will retry the scan.
  • 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://zajinet.ru/strik?utm_term=adjektivdeklination+arbeitsblatt+pdf
    • https://static.s123-cdn-static.com/uploads/4456686/normal_5ff26d62c6b06.pdf
    • https://static.s123-cdn-static.com/uploads/4413225/normal_5ff307f28fe40.pdf
    • https://cdn-cms.f-static.net/uploads/4476947/normal_60484adee8e3b.pdf
    • https://cdn-cms.f-static.net/uploads/4481420/normal_5fd88d1569b23.pdf
    • https://cdn-cms.f-static.net/uploads/4415051/normal_6026b021313c5.pdf
    • https://cdn-cms.f-static.net/uploads/4420434/normal_60485e7828a55.pdf
    • https://rikedinodewo.weebly.com/uploads/1/3/5/3/135323941/6261078.pdf
    • https://terabawopezuxer.weebly.com/uploads/1/3/4/3/134364982/lodapubakezugeloles.pdf
    • https://dotanivim.weebly.com/uploads/1/3/4/7/134705276/bivudinez.pdf
    • https://cdn-cms.f-static.net/uploads/4417813/normal_600c019217948.pdf
    • https://cdn-cms.f-static.net/uploads/4470830/normal_602d02efba28e.pdf
    • https://cdn-cms.f-static.net/uploads/4385635/normal_5fda6038ec603.pdf
    • https://cdn-cms.f-static.net/uploads/4426955/normal_605c71e81083c.pdf
    • https://cdn-cms.f-static.net/uploads/4401505/normal_603f3433a22f3.pdf
    • https://fawewunukeni.weebly.com/uploads/1/3/0/7/130739651/xemagirewekesob.pdf
    • https://cdn-cms.f-static.net/uploads/4421336/normal_6044781ade582.pdf
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd1385a1b40e.pdf
    • https://cdn-cms.f-static.net/uploads/4426955/normal_6028337369f21.pdf
    • https://vusowosunuk.weebly.com/uploads/1/3/5/9/135975823/0474f5cd375.pdf
    • https://s3.amazonaws.com/mejigavukolu/45349295171.pdf
    • https://s3.amazonaws.com/sifawekujiki/damowilinareviluwadi.pdf
    • https://s3.amazonaws.com/jarawaxanivu/dulofowuzukufogasuguroto.pdf
    • https://s3.amazonaws.com/donarepemi/62523596764.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

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