Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aab331f8ce109fd…

MALICIOUS

PDF

32.1 KB Created: 2020-08-17 03:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e3a7c65379505263daa56667d896293 SHA-1: 6c42bfb52e01ea8b3675a9f651a8eef1a47c5d8f SHA-256: 8aab331f8ce109fd2c8358486e770968caa358ccdd415b79ae45d1b9f4df031e
162 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used to lure users into downloading further malicious content. It also exhibits a link farm pattern, with numerous links to PDFs hosted on Shopify, likely for SEO poisoning or to obscure the true malicious destination. The document body text and heuristics indicate a social engineering lure to install a browser extension or update, a common tactic for credential theft or malware delivery.

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=bluejeans+add+in+outlook
    • http://kekanokoj.simonbrookercoaching.com/uploads/1/3/2/6/132683024/gidokaxadegetilape.pdf
    • http://files.nclandandhome.net/uploads/1/3/1/1/131164446/nedimodat-zapalim-sozes-kiwolefarabime.pdf
    • http://nufijil.covenantasheboro.com/uploads/1/3/0/7/130776542/povuku-dinevipimi.pdf
    • http://files.mazdakkhamda.com/uploads/1/3/0/7/130739288/gipikikejelesed-vifame.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/32374429672.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/jupip.pdf
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/pogakadolijoxabimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/54847575176.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/hero_bike_spare_parts_name_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/antiphospholipid_syndrome_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/6304/0413/files/free_printable_6th_grade_reading_comprehension_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/7614/7607/files/albuquerque_digital_tv_guide.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_off000042ae.bin
94a6a2c0ac7f6bc18a6bc0e9b98164fd70d4773dc7604cebb45434b1f62fad0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x42AE 4912 bytes
font_01_sfnt_off00005381.bin
d94259043739208502c75e11c13ca31644520c1359960d79b8aaf043b291be02
pdf-font-stream PDF embedded font (sfnt) at offset 0x5381 9596 bytes