Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eda1f9fcc8008e6…

MALICIOUS

PDF

78.4 KB Created: 2020-08-14 03:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cdb2d61e443ba7a4583452a47538f29 SHA-1: a5959e0b5a8904e7272b4379b423299e931f2988 SHA-256: 7eda1f9fcc8008e693f2adb9ad4f9c4bbdc26d41569f5748f6802537cb4e68d0
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about the Arusha peace agreement. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely for SEO poisoning or to distribute malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of the file. The embedded URL points to a redirector that likely leads to a second-stage payload.

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=arusha+peace+agreement+rwanda+pdf
    • http://files.voiceofgreg.com/uploads/1/3/2/7/132710491/5612914.pdf
    • http://lanopuf.nickrosencutter.com/uploads/1/3/1/4/131453645/kuzuwinor-wimudori-rejugig-bikij.pdf
    • http://files.allthatdance-nj.com/uploads/1/3/1/0/131070894/gapusupusubanijafixa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/20886173404.pdf
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/tudufasokefovaw.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/wipevijozopivepe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/venonezodarenujan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7177/4615/files/nisabusupixo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4626/4213/files/zukoxet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/megikunij.pdf
    • https://cdn.shopify.com/s/files/1/0437/8725/5960/files/71419587464.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/los_caballeros_templarios_alejandro_dumas.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/79346625182.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/21508858368.pdf
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/barcos_que_vuelan_a_color.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/kililavovemege.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/heat_controller_inc.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f537.bin
2be674eb4742c6a8042c8c6ae02ad2d1fb944ab8fcc2f2112c0f05d7619e86cb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF537 5616 bytes
font_01_sfnt_off00010842.bin
14f8d749fd7847db61f763c4bfcae3b23b3fb79d18b803ab460c6df112ce0d70
pdf-font-stream PDF embedded font (sfnt) at offset 0x10842 10524 bytes