Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf422418758173e4…

MALICIOUS

PDF

105.6 KB Created: 2020-10-27 00:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f08407881b34ee7b91119ed17d362af SHA-1: 1b26c1ec4ac58c06099413086997d74f8ef2085e SHA-256: bf422418758173e4efdfd7bf02aa246f57e2ccb25e2f9986a7b494140c53f1d1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which point to a link farm infrastructure. One prominent URL, https://gettraff.ru/strik?keyword=spontaneous+immolation+pathfinder, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to redirect users to malicious content. The presence of numerous PDF links indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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.
  • 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.
  • 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://gettraff.ru/strik?keyword=spontaneous+immolation+pathfinder
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/4eacea5.pdf
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/vebufez_pedob.pdf
    • https://cdn-cms.f-static.net/uploads/4412895/normal_5f9645a00a8a0.pdf
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f9751111fac7.pdf
    • https://cdn-cms.f-static.net/uploads/4371790/normal_5f903a84a8d21.pdf
    • https://cdn-cms.f-static.net/uploads/4372072/normal_5f8a0f325ad41.pdf
    • https://cdn-cms.f-static.net/uploads/4368732/normal_5f93240d351b8.pdf
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2824351.pdf
    • https://ruwalabipuges.weebly.com/uploads/1/3/4/4/134465281/duxaz.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdf
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/6eaf5bf9.pdf
    • https://pobasejedewepiz.weebly.com/uploads/1/3/4/0/134017346/biboziweketujo_fivavir_fironaleduda_jafomijuderot.pdf
    • https://s3.amazonaws.com/penefelomiju/mitisuj.pdf
    • https://s3.amazonaws.com/wesezuzuvalirik/ascii_and_ebcdic.pdf
    • https://s3.amazonaws.com/mijedusovineti/vojiroxobimek.pdf
    • https://s3.amazonaws.com/henghuili-files2/23709496553.pdf
    • https://s3.amazonaws.com/jezaxojipevu/ahmedabad_city_road_map.pdf
    • https://s3.amazonaws.com/kavitokolezub/epidemiologia_analitica_experimental.pdf
    • https://s3.amazonaws.com/widiku/1476158741.pdf
    • https://uploads.strikinglycdn.com/files/0b2a0ec3-55d8-463d-a9dc-7506de2aa21f/zagoxalewafebubixubigu.pdf
    • https://uploads.strikinglycdn.com/files/99a1b4da-15fe-42a1-a9d7-b35ebd18d0a8/levotelusobubujunavu.pdf
    • https://uploads.strikinglycdn.com/files/eb641609-7667-410e-a6ec-dcb6c3fdda1c/35155922188.pdf

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