Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe61c37374ed7310…

MALICIOUS

PDF

36.3 KB Created: 2020-08-03 17:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ded5186f13a337a85fea3181d93fe48 SHA-1: e68edc1a1ee080a5da6b1f1d5087cf0243bc6bff SHA-256: fe61c37374ed73101150d0a41501e58aa4486ea0a44fb88508be8cf874879ee3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a malicious redirector link that leads to a site designed to trick users into downloading malicious content. The document impersonates a cloud document service and uses a call-to-action phrase to encourage clicks. The embedded URL 'https://ttraff.cc/pify?keyword=cambiar+documento+de+pdf+a+word+online' is a critical finding, indicating a redirection to potentially harmful infrastructure. The presence of a PDF link farm further supports the malicious intent.

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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cambiar+documento+de+pdf+a+word+online
    • http://files.apneaodyssey.com/uploads/1/3/2/8/132814050/xozomobewigo.pdf
    • http://lusuv.upstatemysteries.com/uploads/1/3/1/8/131857631/6168784.pdf
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/87733878402.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/lanosanomesutajosasowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/savojobapowufumuganovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/matovefarawi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxupajajivamuwiri.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/xelexuwimovidujuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/66407053057.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/49445338715.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/pefigavinibuja.pdf
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/66936372231.pdf
    • https://cdn.shopify.com/s/files/1/0434/6744/0290/files/zilaledil.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_off0000513f.bin
5b13da1dfd43098781933da3ba2659dc0d7e74e936d045c5463dd83ee6a8ad87
pdf-font-stream PDF embedded font (sfnt) at offset 0x513F 5260 bytes
font_01_sfnt_off00006314.bin
cc3ce3f73e2929c71e440eec2e64e2165a92cca00e41444996cee09becaceb9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 9680 bytes