Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa61bf2cc0c4e71b…

MALICIOUS

PDF

49.9 KB Created: 2020-08-02 01:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48258ea19374c51128e3b0edf120674e SHA-1: 2802bbab2d007cc7962c1f9e0c666cae08fbb16f SHA-256: aa61bf2cc0c4e71bc7ef3b151023e7149ab16d52860ad6a53cb88914d763ccfc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains a reference to 'printable periodic table of elements' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of links to known malicious infrastructure.

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.cc/pify?keyword=printable+periodic+table+of+elements
    • http://files.unionchapelmonroe.com/uploads/1/3/2/7/132740445/4de096801a1ea.pdf
    • http://files.iacela.com/uploads/1/3/1/8/131858043/bekenomez_zijinutapob.pdf
    • http://files.caubands.net/uploads/1/3/2/6/132682882/1fb4b.pdf
    • http://files.treeseedonline.com/uploads/1/3/0/9/130969298/wenibogapeb.pdf
    • http://files.treeseedonline.co
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/downloaded_rosetta_stone.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2636/files/kujozuju.pdf
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/26396608179.pdf
    • https://cdn.shopify.com/s/files/1/0435/7337/9230/files/jewoxebalamikofase.pdf
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/ww_cda_pl.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/24403725123.pdf
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/13134762750.pdf
    • https://cdn.shopify.com/s/files/1/0440/6312/9765/files/92817967433.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/wii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/0709/9558/files/tavozufetezorogezin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/pobuwomapipadegok.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/finomuroxerupusa.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_off00007797.bin
57b826be2f246a41e5c80f5000c4e99c6260c583ebf6ab56e0ef889a430b0842
pdf-font-stream PDF embedded font (sfnt) at offset 0x7797 5232 bytes
font_01_sfnt_off00008932.bin
698389d682101e83e6c6be6b961e4cfc03b4460097a706dfacd295c9149aaa1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8932 10296 bytes
font_02_sfnt_off0000ac2c.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC2C 4324 bytes