Malicious PDF — malware analysis report

Static analysis result for SHA-256 b26079d27e15f1bc…

MALICIOUS

PDF

43.4 KB Created: 2020-08-23 10:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b388b74d73c69e39c1b89adc15531a54 SHA-1: 824dd5139d4a28835c4990ed8f0c37a7205e8d18 SHA-256: b26079d27e15f1bc087c61975e4e6af400d69892347b199c4cad6d29ee8d7720
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The embedded URL in the document body, 'https://ttraff.com/pify?keyword=is+bitcoin+miner+android+app+legit', is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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=is+bitcoin+miner+android+app+legit
    • http://files.atonewellness.com/uploads/1/3/1/3/131383398/gananikukikadu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/medobaxawurubigorufiwawe.pdf
    • https://cdn.shopify.com/s/files/1/0440/0473/7174/files/14300555732.pdf
    • https://cdn.shopify.com/s/files/1/0434/5593/8725/files/human_resource_management_14th_edition_mathis.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/jisiletoduxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/reading_skills.pdf
    • https://cdn.shopify.com/s/files/1/0436/5022/0185/files/best_bitcoin_trading_platform_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/29645162863.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/bojekoganovajaxipivi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/8198246677.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_off00005b92.bin
1cb612c095e36ad49258cb15101dd60f5dee75e737277fa2b22363447d14ff6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B92 5260 bytes
font_01_sfnt_off00006d39.bin
c68bbe6b3e0a613437c2263644631c9013384763efcef159d8ac02ff4324a182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 11060 bytes
font_02_sfnt_off000092ff.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92FF 4324 bytes

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