Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d5a61df4e3422c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 02:26:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d4324114aa9784e2e342bf454bb5bd1 SHA-1: 3131a14aa114986f4054417ef109addba60990ea SHA-256: c9d5a61df4e3422c186cf3e8bd473bcdfa5045884442ddb9e8be0cafb5c0d8bc
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=berrien+county+friend+of+the+court+handbook'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0432/6844/0232/files/zawojulifigutarorapikiki.pdf'. The presence of a visual download button lure further supports the malicious intent.

Heuristics 4

  • 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.
  • 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=berrien+county+friend+of+the+court+handbook
    • https://cdn.shopify.com/s/files/1/0432/6844/0232/files/zawojulifigutarorapikiki.pdf
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/wiviworujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/28411117554.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/gakonobikevusobuge.pdf
    • https://static.usrfiles.com/ugd/b52961_27b40890b82144caab116824b630f97d.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_bc9cf223533c45ce981f3916975e43c3.pdf
    • https://static.usrfiles.com/ugd/6f9b04_9d01904d29f948ee9407596050f08074.pdf
    • https://static.usrfiles.com/ugd/136d07_0a2dcd1e85af40d79044e988f02d1b6f.pdf
    • https://static.usrfiles.com/ugd/4826f5_c7852f0ad82748ec852347333dd1043e.pdf
    • https://static.usrfiles.com/ugd/ce14f3_c088f7b785bd4c1a92df11c2ed4f997e.pdf
    • https://static.usrfiles.com/ugd/7f16bd_1e1cb110889a4d919989c7896ba09ef2.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/american_music_awards_2017_performers_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/campbell_reece_biology.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/ansys_apdl_examples.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_off00006594.bin
4a9c6cca9c238ceaf4bcdeac24b9c73c370cabcb8f07ec35eed0673d2cc02dd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 5252 bytes
font_01_sfnt_off0000776d.bin
20caaac6461929b22cd0adf8bd17dffa211c4d2e3beab4a9a7f62af06be5059c
pdf-font-stream PDF embedded font (sfnt) at offset 0x776D 9980 bytes