Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffa58289c51f1f0…

MALICIOUS

PDF

45.4 KB Created: 2020-08-28 04:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0995ebc3f59a751640eba76125d53f53 SHA-1: 84299df7368495e2b531072e7d178edd196821a0 SHA-256: 3ffa58289c51f1f0721073c512f6089f9d73632bc92f1a9bb1598dd2d955599c
160 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 multiple embedded links, with one specifically pointing to a known malicious redirector. The document also includes a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running malicious code. The presence of a large number of external PDF links indicates a link farm, likely for SEO manipulation or to obscure the final malicious destination.

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=hallo+django+pdf
    • http://files.xobrows.com/uploads/1/3/1/4/131407802/putizujusapaxifobam.pdf
    • http://nesaj.raphikang.com/uploads/1/3/1/4/131406069/6827673.pdf
    • http://jilok.jbphotography.studio/uploads/1/3/1/3/131383652/kadukutugumisa_jebedana_noweva.pdf
    • http://files.purgatoirevalleyfoundation.org/uploads/1/3/1/6/131607029/bojugamerati_banorudelex_zilevadexot.pdf
    • http://mubala.empoweredforlife.net/uploads/1/3/0/9/130969918/puduv-narunazoxapelu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/54838314807.pdf
    • https://cdn.shopify.com/s/files/1/0452/1204/1367/files/bcd_grey_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/nugazojitefifote.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/73142125722.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/copy_file_terminal_mac.pdf
    • https://cdn.shopify.com/s/files/1/0447/6187/4583/files/saving_grace_tv_show.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6900/files/baparabod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/generac_20kw_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/5721/5648/files/98657097102.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/35208079233.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/76768247736.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_off00006630.bin
cd0de20ca650c03c53394c9ad2ec28f8681687ca682288d239e23fb28a791428
pdf-font-stream PDF embedded font (sfnt) at offset 0x6630 4516 bytes
font_01_sfnt_off00007599.bin
e9db723c6482b642de383febdf0cd6ec3c7dd9c4444f33b1de9fcfa330632807
pdf-font-stream PDF embedded font (sfnt) at offset 0x7599 10768 bytes
font_02_sfnt_off00009a76.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A76 4324 bytes