Malicious PDF — malware analysis report

Static analysis result for SHA-256 5000e5bd1657ad06…

MALICIOUS

PDF

47.3 KB Created: 2020-08-29 02:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a99dc4fcee2af43613c7c5fadc44c9ea SHA-1: c6face0203e90f5efe0d883d5a2e5c99c4a2e8c9 SHA-256: 5000e5bd1657ad060f46317305b19dbf03f9c0ef5985888de06e20733ead3d69
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a software activation prompt. The link leads to `https://ttraff.ru/wix?keyword=www+cyberlink+com+oem+8373+pdvd+activation`, which is a known malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely for SEO manipulation or to obscure the malicious destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=www+cyberlink+com+oem+8373+pdvd+activation
    • https://static.usrfiles.com/ugd/b8c837_c79c3b56b2d8456cb416a272aa5cb81e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2d1886b0e294039b52644c7ba0f0d09.pdf
    • https://static.usrfiles.com/ugd/b8c837_8800f48600f345069d2bbca9e13aedf9.pdf
    • https://static.usrfiles.com/ugd/b8c837_278e1fd19dc347cab010a2f6a4565665.pdf
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/83422296068.pdf
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/65559480827.pdf
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/zerivevefid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdf
    • https://static.usrfiles.com/ugd/b8c837_c180215a48c347af82da553412fb9ca4.pdf
    • https://static.usrfiles.com/ugd/b8c837_964c2ae144f34a40bc95ae92fd1534ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b4b8a42121b471087c8429618d7b874.pdf
    • https://static.usrfiles.com/ugd/b8c837_1380a990398f4b83bc1111e9664366e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_3648b8f97c8f40eaa802007c7e96c16d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4993/files/calibre_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1442/files/nunuzabujugefazo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0314/0506/files/buvodosexirisenojotalig.pdf
    • https://cdn.shopify.com/s/files/1/0429/8748/7395/files/titemesafasiferebak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056be.bin
caa9ce8e02e8934d7854dfc34415426410798afed8d1f0abf07297cd7c817a99
pdf-font-stream PDF embedded font (sfnt) at offset 0x56BE 5948 bytes
font_01_sfnt_off00006b01.bin
87e14868d1d9104e1fd1d1609ce9f51391cc12d263b97d38ea1842e71aad37ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 13136 bytes
font_02_sfnt_off0000958c.bin
dd23a87eefe5f33c2c8aefc4a73c43dba945d9fee20897bfd2ac16930dc02cf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x958C 17536 bytes