Malicious PDF — malware analysis report

Static analysis result for SHA-256 545e53aeac63e382…

MALICIOUS

PDF

38.6 KB Created: 2020-08-06 05:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fd9b1ab8a7c0fe312ed4f994578d944 SHA-1: f210ceb14a7b4787ce26316650056f8028a38948 SHA-256: 545e53aeac63e382fe64fe6495c1df7838e1e0b7a739e190a19923f3aa6594fb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=6th+grade+math+vocabulary+worksheets+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites, likely under the guise of providing the advertised worksheets. The presence of a PDF link farm heuristic further supports this, as it suggests the document is designed to distribute links to external content, some of which are malicious. The document body contains obfuscated text and a URL that appears to be part of the redirection chain.

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.cc/pify?keyword=6th+grade+math+vocabulary+worksheets+pdf
    • http://files.smartstartdriving.ca/uploads/1/3/0/8/130814408/6543536.pdf
    • http://sefijepul.heshooktheworld.com/uploads/1/3/1/0/131070161/2033221.pdf
    • http://files.onemorepagebooksstore.com/uploads/1/3/1/6/131636914/xofokug.pdf
    • http://files.mrsresler.com/uploads/1/3/1/3/131380847/1c2ed2e96ccb67.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/53738736550.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/capitalismo_monopolista_de_estado.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/34676650438.pdf
    • https://cdn.shopify.com/s/files/1/0436/7056/9113/files/rebemawozojozukapuwetet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/tenemox.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/fevizavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/vegusilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13164506765.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20785775646.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/gurefusapojuvi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/limuroxategeborajaka.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_off00005739.bin
49751b66722bcbdf22b4689859231cdb4b8baa416cf3808ce1261a02bcd939e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5739 6088 bytes
font_01_sfnt_off00006bd6.bin
fdd8c24b24c0016c5354111761de5c1914d773cd66504f7630c36b8d695d0715		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD6 9864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.