Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5be45daaf853069…

MALICIOUS

PDF

55.3 KB Created: 2020-08-26 18:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4d2922c403859499bb5fb04e0fac1e2 SHA-1: e3a9a0d1281a6739fbe3ed4edb4eeb3446511c1b SHA-256: f5be45daaf853069c53d4394d75084c180f79f6f7021cc7470da1cc4c78789a4
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=body+scanner+app+download'. Additionally, a heuristic for a browser extension installation lure indicates social engineering to trick the user. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The presence of a large number of external PDF links suggests a link farm used for SEO poisoning or traffic redirection.

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=body+scanner+app+download
    • http://files.miramarbarra.co.za/uploads/1/3/2/6/132681062/doviratojeju_ronenilom_tubanamewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/vejazitanamuzakejujupebu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/purchasing_clerk_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/sotewofedu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/isabel_de_los_rios_beyond_diet.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/dimutadoxuzosigare.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/xokogabanutigafib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7421/5331/files/turazuvoritowizigudidumu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/15870111542.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/resmed_apnealink_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/functionalist_theory_of_stratification_davis_and_moore.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/bidmas_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/7575/4389/files/durable_power_of_attorney_north_carolina_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/58349359948.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_off00009b60.bin
a2cf2dfc2c7cc67cfc5010ce8d1b27ed65c88938367ce7a42ac559fa49f66603
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B60 5308 bytes
font_01_sfnt_off0000ad90.bin
5abe837a6b07e1f8b3cc20dd1494e7ebdf3061dc6c508869d2a47db0b2a6980c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD90 10180 bytes