Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2d14967fd02519…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 17:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 708cad36f7cda243a9a0a68d0133dfa1 SHA-1: 87a363bbb7ca79ddf2b1df5f9fb58569df7347dc SHA-256: 4e2d14967fd02519b47090d5d6583d61bcb592c0c3e730530c9c1ad47189fb38
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to 'wedding invite template online' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious redirector.

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=wedding+invite+template+online
    • http://files.ehechtennis.com/uploads/1/3/1/3/131383586/8504646.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3057/files/43574636943.pdf
    • https://cdn.shopify.com/s/files/1/0432/2387/5746/files/command_line_merge_linux.pdf
    • https://cdn.shopify.com/s/files/1/0429/9449/9743/files/palmistry_in_urdu_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/lr_androids_hidden_potential_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/balwant_rai_mehta_committee_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/1411188041.pdf
    • https://cdn.shopify.com/s/files/1/0450/5973/5704/files/renaissance_architecture_in_france.pdf
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/97782402516.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/vajuvovebukelulikopugesu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/85738633391.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4693/files/blog_de_libros_cristianos.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/wijadisigukegevini.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/42901313210.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/don_t_starve_together_mods.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/kadaj.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_off00006434.bin
764963fcb81cb74223febf5553239955f6cf0aac095ea68686b6a7adfbee9e53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 5076 bytes
font_01_sfnt_off0000757c.bin
6e75df0699a95401dc5b1139b406bc1df0e8390e1d123fc8762f231557064161		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757C 10048 bytes

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