Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0a558b370443ff…

MALICIOUS

PDF

32.0 KB Created: 2020-10-30 20:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84542ae36b6ee303ee511cbb848e1d1b SHA-1: a7503256d7f5fed257c6a8bada2db9b664aaf1a3 SHA-256: 6a0a558b370443ff03185bdcfa469dbca995ed3c70b5dd8570a003edd3c63c2f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/123?keyword=fairy+tale+pdf' is confirmed as malicious. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded URL strongly suggest a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 2

  • 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.
  • 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/123?keyword=fairy+tale+pdf
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/bobizagumulogiz-vawenedubedolab-zenixedigix-busokokeluraj.pdf
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/jopaluz-wiwoniles-dunibuxiwolagat-wetunis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/30d88cd7-9bdc-4279-a6b6-9e33051a2f71/how_to_knot_a_shirt_in_the_back.pdf
    • https://uploads.strikinglycdn.com/files/36877bc5-7076-4723-8253-912bb57d9ead/11525320821.pdf
    • https://s3.amazonaws.com/ribowexulo/92369775752.pdf
    • https://cdn.shopify.com/s/files/1/0504/4512/3738/files/82373318951.pdf
    • https://uploads.strikinglycdn.com/files/0cd76c54-daf7-4523-b8f5-65c64f5cc8d1/valufese.pdf
    • https://s3.amazonaws.com/nonipesikiri/unity_reorderable_list_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0497/2871/6986/files/kekidegokaxusupumapesig.pdf
    • https://s3.amazonaws.com/fofeguj/shining_force_2_rename_characters.pdf
    • https://cdn.shopify.com/s/files/1/0501/7885/0992/files/define_trade_union.pdf
    • https://uploads.strikinglycdn.com/files/824e671e-cbfa-41c8-8fcd-1d1bcf3e2f74/98210431614.pdf
    • https://uploads.strikinglycdn.com/files/59e13769-9583-452e-ae80-95f459548efc/78600865570.pdf
    • https://cdn.shopify.com/s/files/1/0496/5738/1027/files/68598188294.pdf
    • https://s3.amazonaws.com/leguvefu/charge_of_the_light_brigade_analysis.pdf
    • https://s3.amazonaws.com/gurowozenupifi/eichmann_em_jerusalem_hannah_arendt.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006939.bin
59b838355c25736747000263e9de66ddcf161e1a04d919a0d8611b3f95404407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6939 4912 bytes

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