Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b3a7548d380b8c3…

MALICIOUS

PDF

43.4 KB Created: 2020-08-10 07:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5986c8ac639e4e8fda70e66eac261d52 SHA-1: 9764291773d151ce9b999a63a537074b44bc8729 SHA-256: 3b3a7548d380b8c38bdee54ed34afa0e8eae45d71009461252e656176b912320
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=methods+of+information+geometry+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external PDF links, with 'https://cdn.shopify.com/s/files/1/0440/8786/9592/files/47103434376.pdf' being a prominent example. The document body, though heavily obfuscated, contains the malicious URL and other embedded links, reinforcing the redirection attempt.

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.com/pify?keyword=methods+of+information+geometry+pdf
    • http://reruxaj.youngstaekwondo.net/uploads/1/3/2/8/132814930/basudobujela-jonezaj-nemixevidur.pdf
    • http://files.cyberedchristianschool.org/uploads/1/3/1/1/131164205/6dfee5691e38.pdf
    • http://pinaretaj.mydeckstairity.com/uploads/1/3/0/8/130814328/wituregexiluzom.pdf
    • http://sazuwoziz.gothamed.org/uploads/1/3/0/8/130813528/mabus-getav-sewajene.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/47103434376.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/fusabejejawejitixonopobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/29101779828.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/wezonifij.pdf
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/los_orgenes_del_neoliberalismo_en_mxico.pdf
    • https://cdn.shopify.com/s/files/1/0430/7874/6261/files/xanafemaxugunuzipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0132/3421/files/thinking_in_java_bruce_eckel_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3356/7125/files/segota.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/27381873332.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_off000069ca.bin
9fa22441bff53c0dd159d1e8f5062df50b63d17e0da0d947a5c2a69753d43894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CA 5532 bytes
font_01_sfnt_off00007c82.bin
f1edfd74afcfa8fb1bf87a1f5228d864cbf451f371affb3df111fe2ed31e0592		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C82 10812 bytes

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