Malicious PDF — malware analysis report

Static analysis result for SHA-256 f925deb1a259e5a8…

MALICIOUS

PDF

52.6 KB Created: 2020-08-25 03:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdda1f2b7993f679a52e74b6059ee4a9 SHA-1: 1aabdbd5971c2d105d2fb3ceec2037e2bb882c44 SHA-256: f925deb1a259e5a8ebeaad23e61b9f8910f63edfcb2a96bf05792bb959257644
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=video+er+ultimate+activation+code'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. This suggests a phishing or malware distribution attempt, likely using SEO tactics to increase visibility.

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.com/pify?keyword=video+er+ultimate+activation+code
    • http://files.beso.co.nz/uploads/1/3/0/7/130738554/xamobaligupawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/alimentos_con_oxalato_de_calcio.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/nz_curriculum_planning_templates.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8945/files/52724031426.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/66469528452.pdf
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/4055745457.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/bazinizukufedotamusijota.pdf
    • https://cdn.shopify.com/s/files/1/0440/2423/4149/files/mahalaxmi_aarti_free_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.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_off00007084.bin
b7b210732739cb6b6fe92fa18f99adb7f67ae1596b5be6efd494fe76f9f463bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 9468 bytes
font_01_sfnt_off0000903f.bin
98394f12cb16ef765fb151a7441210b8d222dc958657287249b4aef8f28cf34a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x903F 4932 bytes
font_02_sfnt_off0000a0f0.bin
1d46c33f5f926a1dbbc6dd953a6050946221540155b08445defa70463ab04931		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F0 10808 bytes

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