Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceca3b156b70830b…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 22:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0972474f45fecf1948f34184588879de SHA-1: fdfb2a07d3e64e71d89adf57d14d3d063f5848d3 SHA-256: ceca3b156b70830b00b39e3f6bcb1ac9c423dfc9a712b1b0c1af7608a2ce006c
128 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with one critical heuristic firing indicating a link to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the malicious link. The primary malicious IOC is the redirector URL, which is likely used to host further malicious content or phishing pages.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=windows+7+pro+bootable+usb
    • http://files.socmedglobal.org/uploads/1/3/0/7/130776809/211f4f55154eed.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/learn_english_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/86795191506.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/36904621812.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/anormalidad_y_normalidad.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/gadefegosanopanagerufiwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/causes_of_agency_problem.pdf
    • https://cdn.shopify.com/s/files/1/0431/5833/9733/files/44162061878.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/61725507721.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/73938281715.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/caverna_rules_appendix.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_off00005a64.bin
b410084f69b47a65b5e07e0bb52f27fa3689a0ab366f2e19a546532cc880c7e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A64 5276 bytes
font_01_sfnt_off00006c77.bin
3a9abe688575faf5df1401201c3fa9c52318c165047a983eab64759d866b22c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 10280 bytes

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