Malicious PDF — malware analysis report

Static analysis result for SHA-256 e669a7d6e63765b2…

MALICIOUS

PDF

44.5 KB Created: 2020-08-08 00:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41a4c3d8260910db5cf439cfe5bf9b38 SHA-1: 91eade0783a23e08641ea9c5e7eb62443ba95171 SHA-256: e669a7d6e63765b2332cd1519ac65936a7fc3c78de8cca3922a065d9d3e6dffd
160 Risk Score

Malware Insights

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

The PDF contains a lure suggesting the user needs a 'best pdf reader' to view content, which is a common social-engineering tactic. It embeds numerous links, including a critical redirector link to 'ttraff.cc', which likely leads to malware download or credential harvesting. The document body itself is heavily obfuscated but contains the malicious redirector URL. No scripts were extracted from this sample.

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/pify?keyword=best+pdf+reader+for+reading+books+windows
    • http://files.banyantreesamui-cuisine.com/uploads/1/3/1/3/131380558/034a4f22484.pdf
    • http://files.stewartvillecommunitytheatre.org/uploads/1/3/0/7/130775851/d5de70955af7edb.pdf
    • http://wagula.hawkmoth.org/uploads/1/3/0/7/130775413/044d139e748a1.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/arranging_sentences_in_logical_order_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/36513298491.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/molovik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6133/6471/files/how_to_overcome_cultural_barriers_in_communication.pdf
    • https://cdn.shopify.com/s/files/1/0430/2176/2723/files/solenoide_adn.pdf
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/pojobexozejudulikoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/bogaxozijo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/xosesifed.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/visual_studio_2010_isolated_shell_redistributable.pdf
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/nefejex.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_off00006fb2.bin
b7c21fb78d048fb633db0fcc5ca0e45aee6a372339a354315c3255493d0dec3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB2 5524 bytes
font_01_sfnt_off000082a1.bin
ec2ce9c7943141e2a8a2fdec1017c2110b0871ca945e9be203e53771a2e61a41
pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 10096 bytes