Malicious PDF — malware analysis report

Static analysis result for SHA-256 979dcf1d502836ea…

MALICIOUS

PDF

63.0 KB Created: 2020-08-02 15:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf0701e3eccaf66b20e5f0f3d28dbd15 SHA-1: 1b0342717cc6638c6d85068fba290d546f850e9f SHA-256: 979dcf1d502836ea59236bf5b5d175a3ceb9b9a954732778a175bc903c9dae84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=cemu+games+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, one of which is 'https://cdn.shopify.com/s/files/1/0428/1401/3606/files/xufefufejif.pdf'. The document body, though heavily obfuscated, contains text related to 'Cemu games download' and the URL, suggesting a lure. A heuristic also indicates a 'Clipboard command execution lure', implying the document may instruct the user to interact with the command line.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=cemu+games+download
    • http://files.masquality.com/uploads/1/3/2/7/132710717/wevisadogidej.pdf
    • http://files.intensitycheeranddance.com/uploads/1/3/2/6/132696274/lawegodovu.pdf
    • http://files.geo-mac.com/uploads/1/3/1/4/131483343/nezegufip.pdf
    • http://files.threecreekaussies.com/uploads/1/3/2/7/132710655/sujut.pdf
    • https://cdn.shopify.com/s/files/1/0428/1401/3606/files/xufefufejif.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0236/files/rakenivotanobonef.pdf
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/que_es_el_employer_branding.pdf
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/61137701951.pdf
    • https://cdn.shopify.com/s/files/1/0437/3836/6104/files/66172187541.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/rexton_hearing_aid_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/36389817549.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/72001734710.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/15406182883.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/nuxazoxusipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/timukenizakamuz.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_off0000b01b.bin
cb8f8b21e0f95ae2493bea69d02849dd8ef9e76e77a16a60d8bc2f7cad46edf2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB01B 5048 bytes
font_01_sfnt_off0000c13d.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xC13D 1800 bytes
font_02_sfnt_off0000c9cd.bin
a9e987791f7c069161c27369b39559a02d58e16ebb756d69c44dfc9e76c18ff4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CD 10884 bytes