Malicious PDF — malware analysis report

Static analysis result for SHA-256 303b6a4291a4438d…

MALICIOUS

PDF

46.5 KB Created: 2020-08-15 04:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9148c9c56fb959e0497d78bb90a8a2ee SHA-1: 6cfa152088ebc79adbaeff0e95ab097d85da72a7 SHA-256: 303b6a4291a4438d99a6cc80d3907d799f40461e67f2c7c5b694600583fc996a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=react+native+datepicker+android'. Additionally, a heuristic indicates a 'Clipboard command execution lure', suggesting the document instructs the user to copy and paste content into a command-line interface. This combination strongly implies the document is designed to trick the user into executing commands, likely to download and run a second-stage payload. The presence of numerous embedded links, including one to a Shopify domain, further supports a delivery mechanism aimed at redirecting users to 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.ru/pify?keyword=react+native+datepicker+android
    • http://rilufu.thecouchmanretailer.net/uploads/1/3/1/3/131381464/2319596.pdf
    • http://files.locomotiveespresso.com/uploads/1/3/1/1/131164351/satuwujewutunoguz.pdf
    • http://files.evangelistphyllisjackson.com/uploads/1/3/1/4/131438616/guzufizijofonap_vuwufeferafogel_dedarukeru_nurapikexo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/bupogimosezezesanosopobe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7453/4041/files/at_t_directv_channel.pdf
    • https://cdn.shopify.com/s/files/1/0448/5254/3649/files/door_key_tarkov.pdf
    • https://cdn.shopify.com/s/files/1/0447/4336/0663/files/65974289242.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/67933950169.pdf
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/jalur_metabolisme_lemak.pdf
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/78088281378.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/zudusaxagugajazaweluriz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/axa_ppp_directory_of_hospitals.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/pigirakoromagumovibupig.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_off00006791.bin
56c5ba76732943b3e2a8fe59fdd9281058ab8710e250f1b1e6670d28475d5298
pdf-font-stream PDF embedded font (sfnt) at offset 0x6791 4988 bytes
font_01_sfnt_off00007894.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7894 1800 bytes
font_02_sfnt_off00008124.bin
8fb251a9e386429ec1be872344c4c72d1812f68276454722d2b74371a7aad87a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 13396 bytes