Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea98ea88179f3eb…

MALICIOUS

PDF

41.2 KB Created: 2020-08-05 06:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 637f2c84ee32ffef01b0b0c85cdfcebb SHA-1: 53b0096b754226b3aed1891566f56ee5ebc2c00b SHA-256: 1ea98ea88179f3eb434e1fb6e5817edf13c2587a5965c630205b167af64acfb9
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to a redirector URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This link, 'https://ttraff.cc/pify?keyword=an+aid+to+accountancy+class+12+pdf+download', is presented within the document body and is designed to lead users to malicious content. The PDF also exhibits characteristics of a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to distribute multiple malicious or spam links.

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=an+aid+to+accountancy+class+12+pdf+download
    • http://files.sealsriflescopes.com/uploads/1/3/1/8/131856852/zekadimemabidavidox.pdf
    • http://files.omahaseniorresourcegroup.com/uploads/1/3/0/8/130813466/3179548.pdf
    • http://files.udderangels.net/uploads/1/3/2/6/132682646/6911161.pdf
    • http://files.ballersabroad.com/uploads/1/3/0/7/130739648/3af73aff.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/24146794869.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/aadhar_download_online_password.pdf
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/68967320771.pdf
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/87947065171.pdf
    • https://cdn.shopify.com/s/files/1/0429/7913/1551/files/zujavojarusewinujowowigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/61969407244.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/gulew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/letidodukexojid.pdf
    • https://cdn.shopify.com/s/files/1/0434/8477/4552/files/23797396989.pdf
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/72413876427.pdf
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/penizerojin.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_off00006195.bin
3abd2ceb102f5b669bebc4cec7d1ce29256c1e04c585de36ec39a763c64aaf9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 5420 bytes
font_01_sfnt_off00007440.bin
a7b16051d86f507c421dcc79a7d413b9ec757b135ab7e33879dbf5bda2130156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7440 10328 bytes

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