Malicious PDF — malware analysis report

Static analysis result for SHA-256 3204af588c8f7ca4…

MALICIOUS

PDF

45.0 KB Created: 2020-09-01 14:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66de4530d383149fddd6cb1b5dee525f SHA-1: b9158f1be3bb90ca0ddbb1ae5c46145a0ea8fac0 SHA-256: 3204af588c8f7ca4a687155c7c514cb94c15655ce79d00622fafc49ad79b0251
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=oracle+java+6++archive'. This URL is likely intended to lead the user to a malicious download or exploit. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further suggests a lure to trick the user into clicking the link. The document body, though heavily obfuscated, contains the same malicious URL and a large number of other PDF links, many hosted on Shopify and static.usrfiles.com, indicating a link farm designed to obscure the final destination.

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.me/wix?keyword=oracle+java+6++archive
    • https://cdn.shopify.com/s/files/1/0461/7542/0579/files/gasavuvijezosotutogibir.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/83012605594.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9733/files/80721704705.pdf
    • https://static.usrfiles.com/ugd/fb83f1_82b7d7df6c4844b698381f91cb9dd5ad.pdf
    • https://static.usrfiles.com/ugd/c12414_722c422ec2194de991af198a7ef3ea3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_81d893d104914a2687a9c730930d7f40.pdf
    • https://static.usrfiles.com/ugd/ed64d2_aa9c0fa9b0b64e26b48048c49d646ba2.pdf
    • https://static.usrfiles.com/ugd/b8c837_621424b95c80457fa38de0bc782c28aa.pdf
    • https://static.usrfiles.com/ugd/0d9a50_c4d6995e441f4b5082bcf857a98f0199.pdf
    • https://static.usrfiles.com/ugd/fe83c3_9a9e225f7e7a44e287d9d6a43feee196.pdf
    • https://static.usrfiles.com/ugd/36f25b_6cfc4568164d434f870a14254c27a5ec.pdf
    • https://static.usrfiles.com/ugd/451a43_477bb19724914158be4dd6c7c475a8f1.pdf
    • https://static.usrfiles.com/ugd/2f7815_2bf52c2d74274dbbb2f32d8f88a8d029.pdf
    • https://static.usrfiles.com/ugd/e1d12c_121a8fb56cf144508547ebf5d818c1cb.pdf
    • https://static.usrfiles.com/ugd/97aff7_596dcd4d48ab4086bdc6df4c5fae5810.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a8.bin
c0eb139630ee3c1c0e9b61d3256831296f61cc5188bc0827eae40252eda00ebb
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 4516 bytes
font_01_sfnt_off00007410.bin
014e9b04d6a44cb86f5f42250b017b8a1da6dac6c36c6320d3c799a4a803de94
pdf-font-stream PDF embedded font (sfnt) at offset 0x7410 11256 bytes
font_02_sfnt_off00009952.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9952 4324 bytes