Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50a3f8ee19b7fde…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 14:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 898620d2b1aec6c5121b0a6fa8c36104 SHA-1: eb1ff3f13b06860656ed6ec5c4ab5899c55a2e2f SHA-256: f50a3f8ee19b7fde34e5979dfe41d0ae99c62ef762684c76887b69d7306f711f
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to Shopify and other file-hosting services, disguised as piano sheet music. One of the primary links, 'https://ttraff.com/pify?keyword=bts+fake+love+piano+sheet+music+pdf', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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=bts+fake+love+piano+sheet+music+pdf
    • http://files.jeromedelapierre.com/uploads/1/3/1/1/131163533/8638015.pdf
    • http://files.collegewomensclubofdayton.org/uploads/1/3/1/4/131483317/279d123.pdf
    • http://files.stalbertlfe.org/uploads/1/3/1/0/131070207/467704.pdf
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/faferuxotumaxamuwoporive.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/80141481479.pdf
    • https://cdn.shopify.com/s/files/1/0431/1711/7601/files/agnosias_visuales.pdf
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/wepedule.pdf
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/catalogo_avon_campaa_16_2020_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/lesenexoboriv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/reasoning_backwards_gregg_young.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/rovuwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/livro_zen_budismo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/169149395.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/katuwito.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f8c.bin
bf3d8f43df4c91aa2fd7cbfe575fbe5b3de0d66130e7d815b2bd352a2a3ed3e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8C 3052 bytes
font_01_sfnt_off00007a63.bin
752061cd48f78ff5574b7649a160cb7d19ed2f96b4ef2abfed1ff1cb7f0376b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A63 5472 bytes
font_02_sfnt_off00008cef.bin
639bca214c4bbec9e96b0f36535e5391364d8cf6e476ae19efeee21196a7b74c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 16316 bytes
font_03_sfnt_off0000bfe0.bin
b0deecbfe9503f8e1956f768ce99028e18d7de30c43ed8f39a60d8175b81601b
pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE0 16080 bytes