Malicious PDF — malware analysis report

Static analysis result for SHA-256 540383a983f7ba0d…

MALICIOUS

PDF

65.9 KB Created: 2020-09-18 06:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9e3e6dd9e0a300e55b0f2deb89de1d3 SHA-1: 69adafa41a6fbe0084ec9cad603ea5b227645732 SHA-256: 540383a983f7ba0d58559a7cedea00950384de00c75ca8e68d444990051fec1c
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.club/wix?keyword=new+version+of+showbox+apk', which is presented as a download lure. Additionally, the PDF hosts a large number of external links, many of which are benign but contribute to a link farm. The document body text also contains the malicious URL, reinforcing the lure.

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.club/wix?keyword=new+version+of+showbox+apk
    • http://files.whitehorsediocese.ca/uploads/1/3/1/4/131438216/vuxesaramob.pdf
    • http://files.wctohio.com/uploads/1/3/2/7/132741225/8576239.pdf
    • http://xowupokib.nikkidisney.com/uploads/1/3/0/7/130739873/fokoxiselo.pdf
    • http://kumuvow.nikiachaney.com/uploads/1/3/1/4/131407089/zesafofunis.pdf
    • http://sulufuw.nscecommerce.com/uploads/1/3/1/4/131453526/debojijapuwuf_vuxukewa.pdf
    • https://a3a75c47-cad1-4adc-930e-96ac34a5dc5b.filesusr.com/ugd/f523c3_50024eb8752e4fa7bfd072b478c75b92.pdf?index=true
    • https://8dbd1b4a-5997-4f51-8877-9fc968a8109b.filesusr.com/ugd/764aaa_f9521f024c2045769404b90cfc7ed6bc.pdf?index=true
    • https://34fd35fe-d206-4b3e-b095-fc7449d592ef.filesusr.com/ugd/10b03a_c9f2d67ac04841fa8d7c6d96f4c23371.pdf?index=true
    • https://9bdc2299-e01d-43f1-a155-b645e71f8c61.filesusr.com/ugd/704566_0a0a99d304524a2fb3757c1ce1973f60.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0436/3524/5216/files/jabof.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/joromewoto.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/62175380777.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/taguxonituporowujefubogum.pdf
    • https://844e4fc2-4727-4b5d-b8bf-85b94c1af634.filesusr.com/ugd/74e905_959886561c1c43febb7bb3790ae5a443.pdf?index=true
    • https://60ca4f88-e873-4b5b-a8b3-c3664ac1af08.filesusr.com/ugd/9058e5_6112fcabc494474e96bf9f9d90fc617c.pdf?index=true
    • 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_off0000c39e.bin
eaee5ca13dc0d51ac01de9245dd71d1db3d8e723b4b94b3c5de43fb2772a5def
pdf-font-stream PDF embedded font (sfnt) at offset 0xC39E 5348 bytes
font_01_sfnt_off0000d5e6.bin
75fb01720cfe89cf0bbc769b252ed6df16b98baaf117715cd25045d61acde171
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E6 10864 bytes