Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd53f1d16fd73cb4…

MALICIOUS

PDF

61.4 KB Created: 2020-08-25 05:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ecc9cf3fc0e7d64d23412e39bfafe1a SHA-1: c77ce7e4f45f7e0ba8c68da3105e6a07280760e5 SHA-256: dd53f1d16fd73cb4f65eb0fbc4a116fdf1f0e1c979d20d41b34923dd9993369c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=child+education+allowance+form+haryana'. This URL is embedded within the document body, suggesting a social engineering lure related to educational forms. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=child+education+allowance+form+haryana
    • http://fuvix.brothersinthewild.com/uploads/1/3/1/8/131871395/9c4425cd2e1a5a8.pdf
    • http://befudu.zhou-jiang.com/uploads/1/3/0/8/130814174/9802559.pdf
    • http://files.ffbuggies.co.uk/uploads/1/3/0/9/130969505/wagutafise.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6057/files/96171118324.pdf
    • https://cdn.shopify.com/s/files/1/0437/8945/1416/files/21921169672.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/42600146942.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/keritugonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3300/1126/files/halo_combat_evolved_cd_keys.pdf
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/vozifuzabopupegubititavag.pdf
    • https://cdn.shopify.com/s/files/1/0450/1517/1236/files/zaberisusamifuluxuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/bubonofijo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5194/8963/files/23645546329.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/fibogelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/93604618824.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_off0000b64c.bin
28e4b8a2c30fd94a61e390961c16f480a6b13d872470a9864e10fa0740a67169		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB64C 5180 bytes
font_01_sfnt_off0000c7cb.bin
29ebcbb960c1213da6ea308c378463568f10916d854db2cd6fcde434cae7595b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7CB 9704 bytes

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