Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25ec27fe18acf76…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 15:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cb399f823eb9eb6c40edabb06cf2892 SHA-1: f23eaad07911e08b9f9de1be1f065b539b0bf0f0 SHA-256: b25ec27fe18acf766a75dad5a5ff3df22a8f00267dbde9945786a203dd9de487
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=general+knowledge+astronomy+pdf'. Another critical heuristic indicates a link farm, suggesting the document is designed to drive traffic to external sites. The presence of these links and the document's structure strongly suggest a phishing or malicious redirection attempt.

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.com/pify?keyword=general+knowledge+astronomy+pdf
    • http://files.toadsoftowedhaul.com/uploads/1/3/2/7/132740214/3856901.pdf
    • http://files.uticalax.org/uploads/1/3/0/7/130775668/bofomavo-rijasekoziw-jimejofo.pdf
    • http://files.theironox.com/uploads/1/3/0/7/130739835/e9b743b21b9.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/panoziwojesopevila.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31184917419.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/nepel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0430/8988/7396/files/discord_why_can_t_i_hear_anyone.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5736/files/56799428909.pdf
    • https://cdn.shopify.com/s/files/1/0433/7421/5331/files/takesopib.pdf
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/92681954136.pdf
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/ziwevovum.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/delik.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/how_to_fix_corrupted_hard_drive.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.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_off00006cba.bin
343b6564370430520d58221a0ea8b8011ce77b4e56e56b6b7c79659abe8d3a82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBA 5652 bytes
font_01_sfnt_off00008000.bin
50159a133c278c977b2b19e2a139cb627f2c0b48846bc5b32d0398cb06b5f921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10816 bytes

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