Malicious PDF — malware analysis report

Static analysis result for SHA-256 23d886fbc55336d9…

MALICIOUS

PDF

49.6 KB Created: 2020-08-04 15:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afd158ff41fbce3ada605d40fe809a66 SHA-1: d760438ec920fa52d3d744ea34e0d0f6c4902e8e SHA-256: 23d886fbc55336d97827fe8e63d75d77785e81cbc3c02ace88697f4ebfe412dd
180 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a redirector to 'ttraff.cc', suggesting a phishing or scam attempt. The document explicitly requests sensitive recovery information, such as private keys or backup codes, which is a high-risk lure. The presence of numerous links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination. No scripts were extracted from this sample.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ansible+ad+hoc+commands+pdf
    • http://files.drkirstensingler.com/uploads/1/3/1/3/131380786/3621197.pdf
    • http://files.lorientoriding.com/uploads/1/3/1/4/131438137/nolimonukobetesoxizi.pdf
    • http://files.synergglass.com/uploads/1/3/1/0/131069869/fivajodasikadu_neposidox.pdf
    • https://cdn.shopify.com/s/files/1/0435/6499/0632/files/18883094589.pdf
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/mubogitimo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/37546270363.pdf
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/1130749765.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/40198392653.pdf
    • https://cdn.shopify.com/s/files/1/0432/4494/5571/files/xediteluvefaranerisek.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/74202832201.pdf
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/66143280924.pdf
    • https://cdn.shopify.com/s/files/1/0438/4702/4805/files/vilolaxubiru.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/51641782504.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_off00006e90.bin
f475971b26d8c2e29973158e5479def8e40e98c5a3f3133471a970ac448d3562		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 5136 bytes
font_01_sfnt_off00007fc1.bin
87845d00fe36e60b7db7ba65fdd64bf4e9fbf957bc6fb3468a34397beec07ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC1 13780 bytes
font_02_sfnt_off0000abea.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABEA 4324 bytes

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