Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed5d594d047bf66…

MALICIOUS

PDF

47.7 KB Created: 2020-07-09 13:31:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17bab16c8372581cac37a49ef17220eb SHA-1: 2b8710398c5956e109517609521ccabaa6484bc0 SHA-256: 2ed5d594d047bf667d8392e649fabcb490487e32165f1488f88f9879d84fd86e
160 Risk Score

Malware Insights

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

The PDF contains a lure to download a 'pdf to epub app', which is a common social engineering tactic to trick users into installing malicious software or extensions. It embeds numerous links, including a critical redirector link to ttraff.cc, and a large number of external PDF links, suggesting a link farm for SEO poisoning or traffic redirection. The document body explicitly contains the malicious URL and a link to a PDF file hosted on files.leightdickey.com, reinforcing the social engineering aspect.

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/wb?keyword=download%20pdf%20to%20epub%20app
    • http://files.leightdickey.com/uploads/1/3/0/8/130874647/05f8115dbadce.pdf
    • http://files.romeroboots.com/uploads/1/3/1/6/131606231/borikuxixoxesu.pdf
    • http://files.calclugston.com/uploads/1/3/1/4/131438299/mizepo.pdf
    • http://files.southshorelittlehouses.com/uploads/1/3/0/9/130969709/lotopifapasivisil.pdf
    • http://files.mariannewardart.com/uploads/1/3/1/4/131453530/jovarerobigad-bowexil-sosevivodov-jalobo.pdf
    • http://files.niassestudios.com/uploads/1/3/0/8/130874318/b919e96e4ba.pdf
    • http://files.collegiatefitexpo.com/uploads/1/3/0/8/130874325/505627.pdf
    • https://suwedogop.files.wordpress.com/2020/06/35609254349.pdf
    • https://verevovi.files.wordpress.com/2020/07/13166300221.pdf
    • https://wadikow.files.wordpress.com/2020/06/12922159433.pdf
    • https://rejogivowub.files.wordpress.com/2020/07/37117573368.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d6.bin
9cf2bad61b5e1f98fa7fbd76831c1412da7d1d82da5dcfa711ae5ee16fa17f13
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D6 4824 bytes
font_01_sfnt_off00007961.bin
bc88dd8444a69c79a286a23e663595fd4ee78d7a0bb7c056bebaed311b509dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7961 10376 bytes
font_02_sfnt_off00009ced.bin
2497516a8097e926c033ff65bc2a14b774712edebe5c3c99bc66b51444d0cd1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CED 16144 bytes