Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5dc08aa2516174…

MALICIOUS

PDF

101.4 KB Created: 2020-09-10 02:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c14c9b77970bb77e75860043111d0f3 SHA-1: 9d3236fccda06f7d984f326e7067658cc5d5bcd0 SHA-256: 8d5dc08aa2516174698f7ea734b82ea44208c69d0dd52f0ae1a879c25bdfbd62
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, https://ttraff.ru/pify?keyword=d%2526+d+5e+conditions+cheat+sheet, is the primary indicator of malicious intent. This URL is likely used to redirect users to a phishing page or to download a secondary payload. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content widely.

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=d%2526+d+5e+conditions+cheat+sheet
    • https://cdn.shopify.com/s/files/1/0440/5454/4534/files/dugamud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7684/files/electron_configuration_worksheet_answer_key_chemfiesta.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/hernia_umbilical_en_el_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3921/9099/files/15240102983.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/fikotudofanowufedi.pdf
    • https://static.usrfiles.com/ugd/1c90dc_55b197ccf52c4b8cb2758beb4e902215.pdf
    • https://static.usrfiles.com/ugd/78c764_157f35c7f2414fd5b57e3ceab3dce86e.pdf
    • https://static.usrfiles.com/ugd/2ac701_7102d5f549ec4feba2b3151bb793b27b.pdf
    • https://static.usrfiles.com/ugd/a01749_a01ac6f41bda431d9c7c73f447f62709.pdf
    • https://static.usrfiles.com/ugd/9f2514_a87039b9c65a4bfcb3b01f5cf6bae262.pdf
    • https://static.usrfiles.com/ugd/115d6e_e909e8cc5b6f49448e297265f9af61fd.pdf
    • https://static.usrfiles.com/ugd/007d40_3a840820caf34a6d96dd7c567e987350.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_off0001579a.bin
58eabb24298f18ab3cb5c3f3a5652a185830994b36fd37cd9ad46fcf77495092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1579A 4156 bytes
font_01_sfnt_off000165c9.bin
39b18020988fe09060d87b5b9fc30a324d5b0c83d9a4bdd5b682beb0c9f2ce4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x165C9 10472 bytes

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