Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13015be2c79f0ca…

MALICIOUS

PDF

49.8 KB Created: 2020-08-05 01:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a420aee294f0cd6496207870e3dfce62 SHA-1: 093954a74e35a80b0e86fee88d0d117477c727c6 SHA-256: d13015be2c79f0ca7a227115132f0b9e31868fdc20fcd97dfbe28b102d57c729
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with the primary malicious link pointing to a redirector at `ttraff.cc`. This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to benign Shopify-hosted PDFs suggests an attempt to blend malicious content with legitimate-looking resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.cc/pify?keyword=banking+system+in+canada+pdf
    • http://files.carolinefconway.com/uploads/1/3/2/7/132740350/rijiwekokutufezexag.pdf
    • http://files.wordsmithresults.com/uploads/1/3/1/4/131452997/bipev-zepofidapezubif-mutop-sewomaforuwolat.pdf
    • http://files.janetfergusonauthor.com/uploads/1/3/2/6/132681517/pozivojitan_redovaradafafo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/attestation_de_travail_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/81050198052.pdf
    • https://cdn.shopify.com/s/files/1/0433/2381/8139/files/gowodorolasutoguxuwubi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/discord_embed_color.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/48578176750.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/benzodiacepinas_mecanismo_de_accion.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/18083346875.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075dd.bin
db57b4e977e1d526f2199d90ec131994ab2109e6dcda3361bddeb43234867099		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DD 5240 bytes
font_01_sfnt_off000087ab.bin
34166ae4e99304470d7df4f00ccb15ceff934065802063ed473e7cb639dcb007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87AB 10848 bytes
font_02_sfnt_off0000ac87.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC87 4324 bytes

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