Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5bda3bdfccb81f…

MALICIOUS

PDF

48.0 KB Created: 2020-08-24 10:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: facc1039d0228aeaa79f9a751abcee32 SHA-1: 9ff1a2b575898fda49f376f63e741439cb2f6a54 SHA-256: ec5bda3bdfccb81f0c3596e03fba3e2d098722cf5d1e60a0ed7cca560beb5a40
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, likely for SEO poisoning or to host further malicious content. The document body also contains the same redirector URL, reinforcing the lure. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick the user into installing something, which is a common social engineering tactic to facilitate malware delivery or credential theft.

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.com/pify?keyword=online+recruitment+system+project+report+pdf
    • http://files.mcdannellsfruitfarm.com/uploads/1/3/1/4/131454219/2796940.pdf
    • http://fepuraj.hkanazawa.com/uploads/1/3/1/4/131453934/buvivofi-nibezejifig-kakuzija.pdf
    • http://files.acriluxe.com/uploads/1/3/1/4/131407552/levax-telezixazolori-bupifokev-vaxavolem.pdf
    • http://files.kirstenambrosemartin.com/uploads/1/3/0/8/130813992/wefuputo-veniradet.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/12575063158.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/jeppesen_private_pilot.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/xumizopaxalujefej.pdf
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/definition_of_pestel_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0463/5669/3154/files/associao_de_capacitores.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/dimisinosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/80639125214.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/nidibetafapudebazuzimuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/a_view_from_the_bridge_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0431/5562/0006/files/bipunugetedepegowa.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_off00007f38.bin
33ba8ccaecc2aa6faa974f19dc6da822dc43ad38d537d3087fa1eb0913cadca9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F38 5296 bytes
font_01_sfnt_off00009134.bin
b1cff5957cbe5bb28cca59c3d6298c8fbcb03ba72fee90c534001b7026962768
pdf-font-stream PDF embedded font (sfnt) at offset 0x9134 9928 bytes