Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb61c018d84a86fe…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 14:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89bfdcbff0e07aba745248af381eeb95 SHA-1: c321225496e0e56752eb78001b35c400e526de7d SHA-256: cb61c018d84a86fea9325e4b346c2f7f0d8f1f1f374d47c27f16368b41d88b27
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as academic content, but the primary link redirects to a known malicious URL. This indicates a phishing or malware distribution attempt. The document body itself is heavily obfuscated and contains the malicious URL, suggesting it's part of the lure.

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.cc/pify?keyword=pengantar+akuntansi+syariah+pdf
    • http://files.innovativestoneart.com/uploads/1/3/2/7/132712174/5551374.pdf
    • http://files.gladewaterathleticbearbooster.club/uploads/1/3/1/4/131453121/9425687.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/77019948311.pdf
    • https://cdn.shopify.com/s/files/1/0450/4164/7766/files/redilego.pdf
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/network_marketing_success_secrets.pdf
    • https://cdn.shopify.com/s/files/1/0434/8048/1954/files/oye_como_va_percussion_ensemble.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/xijafomudaxarijexi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5280/1943/files/91610085653.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/86871707391.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/28510807423.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/xugopekatafixolanos.pdf
    • https://cdn.shopify.com/s/files/1/0446/1946/4867/files/biblia_de_estudio_explicada_concordancia.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_off00006ea7.bin
e786e1eeda5dedfcc2dafe071f741d168f7d41cc5f8a3db9c16d4a10325da4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 5440 bytes
font_01_sfnt_off00008129.bin
b7ad7884fda28e77cdbb4dd5928bc0f213b23dd218e6ab859b9a89e7712e4eba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8129 9956 bytes

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