Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ea6ba0b3d0fe45…

MALICIOUS

PDF

40.0 KB Created: 2020-08-19 00:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3aa12149b28a0ee456f15cf89f3e624d SHA-1: 7c5c2c7fdddb29f37cdd294d38e19a5e02beb30e SHA-256: 84ea6ba0b3d0fe45d952e7e7aeaa72daa4a1cef5868c0ca11e4339ad798ee83c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=a1244+transistor+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDFs. This suggests the primary intent is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

Heuristics 3

  • 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.
  • 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=a1244+transistor+pdf
    • http://files.tonycovena.com/uploads/1/3/0/7/130739131/062a96.pdf
    • http://nimutilaj.envirohealthuk.com/uploads/1/3/1/6/131606354/2378461.pdf
    • http://files.meanqueensitka.com/uploads/1/3/0/7/130776363/godizadabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/recuperare_chat_whatsapp_cancellate_android_senza_backup.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/46565152391.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/jejunarinujafeb.pdf
    • https://cdn.shopify.com/s/files/1/0435/9120/5021/files/xekegumafelikuvelogex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39843759369.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/2007_yamaha_v_star_650.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/39209139981.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/37656516781.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/82234028644.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/dowakirexexalazix.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/kixulesare.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6615/files/os_axiomas_de_zurique_completo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.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_off00005425.bin
7e56755d61030a4b755cd6138c30dc7a5332d7f4988580721e312a9160ce7e87
pdf-font-stream PDF embedded font (sfnt) at offset 0x5425 5264 bytes
font_01_sfnt_off00006619.bin
918c9de18437b7ea460bb71e367da922ff95337ce22cbb84bb4fad4d5d83e380
pdf-font-stream PDF embedded font (sfnt) at offset 0x6619 14744 bytes