Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b122e7b935e2e10…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 15:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeaf46d825cd83c62d232f5755c9c746 SHA-1: 85440ee37028ef79915ac9f8225d6fb8a31e36cd SHA-256: 8b122e7b935e2e10424050e731239d71db7fd5b22cf11c6ba30ef63ed68b50c6
150 Risk Score

Malware Insights

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

The PDF contains a prominent link with the text 'Gta v ban bypass' that redirects to the malicious URL https://ttraff.com/wix?keyword=gta+v+ban+bypass. This URL is flagged as a known malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=gta+v+ban+bypass
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/tisepelidejabudixepadato.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1461/files/dolewumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/31868835272.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9017/files/wikazuzulapasox.pdf
    • https://cdn.shopify.com/s/files/1/0436/2112/2208/files/6654994888.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b0b0bfba6b743bebedf975decc995d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_def354568d19499382b813ed6743059c.pdf
    • https://static.usrfiles.com/ugd/eed56f_ab0bff29ef2947dc9a1aa8e314c8a0b7.pdf
    • https://static.usrfiles.com/ugd/97634b_6b836ab935d04be689df81e2a899a94a.pdf
    • https://static.usrfiles.com/ugd/b8c837_17394378c2454fe4af15017234932237.pdf
    • https://static.usrfiles.com/ugd/b8c837_0fc529a1f53c40a1900a7fef4b720b27.pdf
    • https://static.usrfiles.com/ugd/affb4a_255f44dc9bdf4562a072851ea2033773.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/byomkesh_bakshi_samagra_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/jisudur.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/cambridge_history_of_english_literature.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/52262365584.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_off00005f75.bin
7ad6bd63e207976720d9210832d60b2ad9ef3efc092e294139e14faa13400dbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 5020 bytes
font_01_sfnt_off000070b0.bin
f772b46c351634e08601bc682aafc0b7a58081e5a07b0cf394283d4dda514d37
pdf-font-stream PDF embedded font (sfnt) at offset 0x70B0 10472 bytes