Malicious PDF — malware analysis report

Static analysis result for SHA-256 4911cf7bb349a6cb…

MALICIOUS

PDF

63.0 KB Created: 2020-08-22 10:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a660fa445e8dfd242fac1afe32721fc SHA-1: 377d4186761d914b334a39925800395d39f04a6a SHA-256: 4911cf7bb349a6cb8d66e9e2cafffd34ef79035293e7388b9c01c621b7eb6d1c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body also contains instructions that suggest a lure for clipboard command execution and password-protected archive handoff, indicating a multi-stage attack. The primary intent appears to be directing users to malicious infrastructure via the 'ttraff.com' URL.

Heuristics 5

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=arma+3+server+hosting+guide
    • http://files.gresford.org.uk/uploads/1/3/0/8/130813489/7b9cd09.pdf
    • http://vabolun.setfreelife.net/uploads/1/3/0/7/130776458/5194035.pdf
    • http://files.paiboon.biz/uploads/1/3/1/4/131406762/1208977.pdf
    • https://cdn.shopify.com/s/files/1/0437/6425/2823/files/82757689789.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/refudetopunepig.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/geology_terminology.pdf
    • https://cdn.shopify.com/s/files/1/0432/0857/3085/files/20354835823.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/ximovuguditigogevabex.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/15387334856.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/3d_max_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/luxaxizofo.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_off00009ccf.bin
1b4ce42c1c4642ad53924523f7bf70ce7f73ac20be6edbad23384865a6f5352b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCF 5420 bytes
font_01_sfnt_off0000af16.bin
0f9e8759292d32f6183f5eb70b6990781ce6d2cb90521d02c685bc99ac53a5a6
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF16 13244 bytes
font_02_sfnt_off0000d9da.bin
f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DA 16204 bytes