Malicious PDF — malware analysis report

Static analysis result for SHA-256 a051b27be48ff0ab…

MALICIOUS

PDF

41.6 KB Created: 2020-08-28 00:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 865fab9a17e85df48aec38069f277338 SHA-1: 61b63b73e830329758af199df283b17f8ff69daf SHA-256: a051b27be48ff0ab404b55a3477ee0adfe01f52960dcc7428c5f3d18e3125e0d
160 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a download for 'Gameboy emulator android games'. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's intent is to trick the user into installing a browser extension or update. The primary malicious URL identified is https://ttraff.me/pify?keyword=gameboy+emulator+android+games, which is likely used to deliver a secondary payload. The PDF also contains a link farm pointing to numerous other PDFs hosted on Shopify, likely for SEO manipulation or to spread the malicious content.

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.me/pify?keyword=gameboy+emulator+android+games
    • http://files.pgridirectory.com/uploads/1/3/1/8/131858916/lizofuwotowikutita.pdf
    • http://files.275athletics.org/uploads/1/3/1/3/131398123/9844252.pdf
    • http://files.llkobe.com/uploads/1/3/1/4/131437158/pokaro.pdf
    • http://files.troytomamusic.com/uploads/1/3/2/7/132741029/7852176.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/14143752317.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/zapeloduwonujon.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/java_jdk_8_102.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/7082763428.pdf
    • https://cdn.shopify.com/s/files/1/0437/1926/2363/files/7174336391.pdf
    • https://cdn.shopify.com/s/files/1/0432/4265/1805/files/40427559117.pdf
    • https://cdn.shopify.com/s/files/1/0432/3508/2402/files/jitogixefuzejejogutid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/80022532697.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/86046159200.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/48325313751.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/87317134909.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_off000063d5.bin
95e42715793951eccacfb099afd75872e92bdf679eb7fe694984f3182adc477f
pdf-font-stream PDF embedded font (sfnt) at offset 0x63D5 5416 bytes
font_01_sfnt_off00007638.bin
cf62ec7f45ba5542c634e0f8536dbbe546f9aefe8c205f2e34ae03ab5658aba1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7638 10312 bytes