Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a4bfab48438103…

MALICIOUS

PDF

47.0 KB Created: 2020-07-31 12:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58a682703188de3d1d20ebc876da2811 SHA-1: a7037929da7d676ac5d5cc33361e9214a6a1ed7b SHA-256: a0a4bfab48438103424d89aa2a55c70d381068d6e789ab1dab23cb7581aa7b33
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, a common tactic for link farms and SEO poisoning. One of these URLs, 'https://ttraff.ru/pify?keyword=mcdonald+s+brand+guidelines+2020+pdf', is flagged as a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious infrastructure, likely for phishing or malware delivery. No scripts were extracted, and the document body was heavily obfuscated.

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=mcdonald+s+brand+guidelines+2020+pdf
    • http://files.sanctuaryandstone.com/uploads/1/3/0/7/130775970/lerijiwegewosofazes.pdf
    • http://files.louisvilleccc.org/uploads/1/3/0/8/130813897/c2e86b82384c2.pdf
    • http://files.thereservehtx.com/uploads/1/3/1/4/131452806/zosakuzegexo.pdf
    • http://files.sunbonnetsuequiltclub.org/uploads/1/3/1/3/131379803/sajotefipor-mixutofoxojemu.pdf
    • http://files.sanctua
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/poxurederiforo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/10290235595.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/84395891472.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/posewivipuresipagudijafan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/guwefalonemejukufizu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/wirizamox.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/52489948945.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/77038376588.pdf
    • https://cdn.shopify.com/s/files/1/0428/7135/7596/files/besojekopelemiti.pdf
    • https://cdn.shopify.com/s/files/1/0430/6681/8721/files/wikibado.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/nivatetefadojuwupoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/xujelivofaki.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/67201406019.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_off00007731.bin
b7a7a779f4a6299e8f3db340dcc3813c370de351adfeeb28f4e4d2c2e78e2de6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 5544 bytes
font_01_sfnt_off00008a09.bin
79e6cfbf537f08ecf5d0ca97faa1d29568c3ef672cd2fc262f3e2b4d0f8c7d40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A09 10736 bytes

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