Malicious PDF — malware analysis report

Static analysis result for SHA-256 8736c4c4c15e757d…

MALICIOUS

PDF

35.8 KB Created: 2020-08-21 23:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b08d6c5585f45b3664628632e78b8d16 SHA-1: abebaf676a879bf6450b8a8ebf850af48548bb90 SHA-256: 8736c4c4c15e757d44f3d33473df30cf619d56a92e9f18b86f19d87bc72c0b9d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=after+action+review+army+pdf', is the primary indicator of malicious intent. This suggests the document is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ttraff.com/pify?keyword=after+action+review+army+pdf
    • http://jujosir.hrunahestar.com/uploads/1/3/0/8/130814328/30f223.pdf
    • https://cdn.shopify.com/s/files/1/0437/8594/5246/files/jorge_luis_borges_ficciones.pdf
    • https://cdn.shopify.com/s/files/1/0435/8520/8483/files/68138159954.pdf
    • https://cdn.shopify.com/s/files/1/0432/6080/5280/files/fibakojezip.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/biblia_de_jerusalen_nueva_edicion_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/cambridge_checkpoint_english_workbook_7.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/amplitude_modulation_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.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_off00004ee8.bin
e7722fc46de79e32cc87b4e419168f4fdce837ef0c760457dee078f2feb927fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE8 5336 bytes
font_01_sfnt_off0000610e.bin
afcb3a75497e00ed9de87066ee8051b73574d54edba548d41fae9483c0868c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610E 9960 bytes

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