Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf18b4a5fa58bbbc…

MALICIOUS

PDF

35.6 KB Created: 2020-08-05 12:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ca3b12f8de8b274a1e2ef925f99c3fd SHA-1: b6ce116b3a92d15c147935b6d417ea2067d89444 SHA-256: bf18b4a5fa58bbbc91a17875a6b6fa4d4d310f71e5fd895d6ece5a47d4c0eaa3
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Pirates of caribbean sheet music piano pdf' and numerous URLs, suggesting a lure to download further content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=pirates+of+caribbean+sheet+music+piano+pdf
    • http://files.madmaxuk.com/uploads/1/3/0/8/130813644/7427163.pdf
    • http://files.catholicfamilycelebrations.com/uploads/1/3/0/7/130775219/gefusaxajobot.pdf
    • http://files.bodinesbakingcompany.com/uploads/1/3/1/8/131871699/muwiletel-nenosatabudi-fivirugu.pdf
    • http://files.greensoundhightech.co.uk/uploads/1/3/1/1/131163635/fejuva-nawuwizo-retexorinuja-jilatotemiwuvok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/84443951584.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/physics_cutnell_and_johnson_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/20441359622.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6509/files/79070944261.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/jakosakimugevutol.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/fimagexatasasetunajune.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/35191126836.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/tokikus.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/24445289624.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0025/files/javataxazonegabudase.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/75724717980.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0994/files/6270300173.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_off00004964.bin
42d9a87fe633e823a4db1af8546a994359f7e62646011ecb52bab11de1ef77c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 5504 bytes
font_01_sfnt_off00005be7.bin
67ddcf22cf8b59175e3532f31384f0c06c986b325ba3ad88679959e29e80033b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE7 10684 bytes