Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7ebc37845dd032…

MALICIOUS

PDF

47.4 KB Created: 2020-08-29 18:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4159f3dafd9db7d321e34d8a20c6c734 SHA-1: 026f69fb4048e4e0d50df1a650654c358141bbc6 SHA-256: 3a7ebc37845dd032412ed7b22477602c26953cffcca84a553214c566469867b5
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=tree+of+savior+dungeons'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The presence of a 'download button' lure further supports the malicious intent, suggesting the document is designed to trick the user into clicking the malicious link.

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=tree+of+savior+dungeons
    • https://static.usrfiles.com/ugd/934fc3_994e1b26b8954855ab7a1f7ed2f50630.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c106e07f52c403bb00a9ab8189df849.pdf
    • https://static.usrfiles.com/ugd/b8c837_36b94304d93f40bca7dbe41b437efeb7.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/69531249710.pdf
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/mojisaguxisabosexag.pdf
    • https://cdn.shopify.com/s/files/1/0433/2381/8139/files/gowodorolasutoguxuwubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/lopawej.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/57384418851.pdf
    • https://cdn.shopify.com/s/files/1/0461/8960/9109/files/ampere_meter_apk_pro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/call_boy_japanese_drama_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/linux_command_line_book.pdf
    • https://static.usrfiles.com/ugd/c5d40f_bb8df29aad5f440e94ea813de358508e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0fa9805f0344f788ecada3814072504.pdf
    • https://static.usrfiles.com/ugd/b8c837_b699bc79bc6a4b26a95dcaf6efec5f35.pdf
    • https://static.usrfiles.com/ugd/b8c837_7512fdf9bc5245d49cfd1570251fa20f.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_off00007b5f.bin
6ecaa7025508baf8bd9dfbb44c3083acf513020673d11dae94296824be669ac9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5F 5052 bytes
font_01_sfnt_off00008ca2.bin
9b4085f529c9200f5a46b2a5a3ddf841a89bb77a9e7fd028dac2b82319ed2647
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA2 10684 bytes