Malicious PDF — malware analysis report

Static analysis result for SHA-256 28b71c0ee4b7b8f4…

MALICIOUS

PDF

48.1 KB Created: 2020-08-02 05:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91700a9a78c46dce7fdb378ae001c3f6 SHA-1: 9025d8a1094a0a8bef935898e3279ad532633cf2 SHA-256: 28b71c0ee4b7b8f43e562b1daea3e87c3cd8100b43e4b6177afe07258db0ce75
200 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=script+dump+script', and exhibits characteristics of a link farm. It also instructs the user to copy and paste content into a shell, suggesting an attempt to bypass security measures and execute further commands. The presence of a password archive lure indicates an effort to conceal the malicious payload.

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.cc/pify?keyword=script+dump+script
    • http://files.blacksmithcraft.com/uploads/1/3/1/6/131637714/418c2550c8b6.pdf
    • http://files.nolasart.org/uploads/1/3/1/4/131453496/gopumaz-nimenujudivi-dukeli-xowoliregajo.pdf
    • http://files.rocmrrc.com/uploads/1/3/1/0/131069887/foremumetosakase.pdf
    • http://files.inspiredayurveda.com/uploads/1/3/0/7/130739718/806141.pdf
    • http://files.apicgno.org/uploads/1/3/1/4/131437515/paxatinupul.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/27388422459.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/musuvukuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/lireme.pdf
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/16883526451.pdf
    • https://cdn.shopify.com/s/files/1/0431/5919/1712/files/zerukakomusugaxebimituva.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4885/files/wetefujegubofin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/66068246607.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/52648708994.pdf
    • https://cdn.shopify.com/s/files/1/0428/2220/5607/files/xidilebokukarelowoxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/korufateki.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/revisimu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/lamixapowomonudaderef.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_off00006bcf.bin
e921d946aeeab97a60a4136857181dff7275d5dd8fad06500a6a3c23069506ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCF 5080 bytes
font_01_sfnt_off00007d04.bin
892981b995a6007a3a7911d67a109b6b682d117333e5927a374bc24363d2ae0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D04 16828 bytes