Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1d7f1a5e9eb691…

MALICIOUS

PDF

36.0 KB Created: 2020-08-22 11:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572e60224effe1674d964d17254e5dec SHA-1: ab47a718943e7b038f00240853c6b2910cf8c57d SHA-256: 7c1d7f1a5e9eb6910180fda83b6b8fcaa02dbc67a24653f9eb2b0f18d87dc955
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is ttraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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.ru/pify?keyword=formica+sheets+wood+grain
    • http://files.littlehandsomez.com/uploads/1/3/0/7/130739742/8917959.pdf
    • http://files.milimawear.com/uploads/1/3/0/8/130813846/bd0854.pdf
    • http://files.lakeskadareagle.com/uploads/1/3/1/4/131438891/8f35b3d0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32600433864.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/catalyst_2960_switch_software_configuration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/95345727463.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/wekakubazorimaditupenu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/chop_suey_drumless.pdf
    • https://cdn.shopify.com/s/files/1/0431/8871/5682/files/gananebaluvi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/nirobita.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/citra_para_android_2019.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_off00004e60.bin
75f4a946c85c44ad273eebe2f75a371828c8512d94f530810dfba9ac73eb90c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E60 5368 bytes
font_01_sfnt_off00006084.bin
1f02470edac0b0a5304855e7fc15a5403beb4c9a6be21b84259cd9590894914f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 10240 bytes

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