Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea87aca064aab34a…

MALICIOUS

PDF

46.1 KB Created: 2020-09-01 07:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd4aa34b28f9e02f351bf328b24d5df5 SHA-1: ad891ff34bcc25d57f507fd2528d57af0c13571e SHA-256: ea87aca064aab34ac7938387a325c459fdfa8fa1051dd44b69b0adc822819f50
160 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, disguised as a lure to install a browser extension or update. The primary malicious URL identified is https://ttraff.cc/wix?keyword=best+android+emulators+for+pc. The document body is heavily obfuscated but contains references to the malicious URL and other benign-looking PDF links, likely to evade detection and appear legitimate.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=best+android+emulators+for+pc
    • https://static.usrfiles.com/ugd/286fb8_1f087eec00014fa5ac2995b3363b8db9.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_9714e2c5e00c4ee4a74ad77823b681e5.pdf
    • https://static.usrfiles.com/ugd/3be3a7_6355998cd552496da92d30c6a7ac0f59.pdf
    • https://static.usrfiles.com/ugd/5ed537_e1eae282c0d443b2a33c8c541f441c48.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d24299663f74cb9828fc4d8b1de3ae4.pdf
    • https://static.usrfiles.com/ugd/b8c837_515eaca7ad8d4dcc94d13af5426e78b9.pdf
    • https://static.usrfiles.com/ugd/3e9e83_8798826e8cf24ca3b934027f773ae6c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_103e10f461a34d39b8cb87ee53655667.pdf
    • https://static.usrfiles.com/ugd/b8c837_90377477b0904e5ababda945b3dd6dce.pdf
    • https://static.usrfiles.com/ugd/2c608b_4d909e3f49b644dd8be870a97f94321d.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96704933611.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/bohemian_rhapsody_partitura_guitarra_clasica.pdf
    • https://cdn.shopify.com/s/files/1/0434/2952/7709/files/green_guon_stone.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/zixuruwiluzelatej.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6645/files/51998950311.pdf
    • https://static.usrfiles.com/ugd/b8c837_c951c817625f4eaab032288f870db976.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d6608b009dd43d7ad134d5df9a149a7.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_off00007610.bin
b1b1e847207c98d2c6dd7863938dc50840970ccde10dd54d5be40376470c41f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 5348 bytes
font_01_sfnt_off0000882e.bin
bee13f0150c500f54007c172df102167088cd1cacc1f70c2ba49cd09131e1bad
pdf-font-stream PDF embedded font (sfnt) at offset 0x882E 10196 bytes