Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd94e4a08fc7560…

MALICIOUS

PDF

38.3 KB Created: 2020-08-30 17:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fa04d414411d7d4023393b704b58fb4 SHA-1: 54ce337ff5056b852b8a64d4fe5df621d4f1e1a4 SHA-256: dfd94e4a08fc7560506ac458b2f1a4dc2725192e33458df26ef8decdb2944196
68 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download for 'Winqsb portable windows 10'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The presence of a visual download button further supports this lure. 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=winqsb+portable+windows+10
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/23709198007.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/rifepuzikelopu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5306/3063/files/refapoxukiruxomine.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/junubetozon.pdf
    • https://static.usrfiles.com/ugd/b8c837_84c271c54998472f8e064733a317bc94.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e3d2afce0414796b97d8b1b9369c023.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/91500603845.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/amazing_grace_cello_solo_sheet_music.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_off000057ca.bin
28467070121bd65cfcb20b513f0f95b930ff28b1a077bdc7b51d47fe0eb678f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CA 5516 bytes
font_01_sfnt_off00006a9d.bin
d2818e582a0ba66aee5133937b6b922acba03b5eb037d84ee4c07099703aec1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9D 10068 bytes

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