Malicious PDF — malware analysis report

Static analysis result for SHA-256 3157d6915e875a98…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 03:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e601255afc9548c01d91781d83f509c9 SHA-1: 50af586cffab8c246ae737b02a75cf39604101cf SHA-256: 3157d6915e875a988f21713a22ae8e4dbdf2619b1b04c6e0b32a2b270a167479
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Wondershare pdf password remover' and the malicious URL, suggesting a lure. The presence of a 'Password-protected archive handoff' heuristic indicates the likely intent is to trick the user into downloading a password-protected archive, which would then require the user to interact with the malicious link to obtain the password, ultimately leading to a second-stage payload.

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.
  • 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/wb?keyword=wondershare%20pdf%20password%20remover%20full%20key
    • http://files.ckmoreno.com/uploads/1/3/2/8/132815183/losogane.pdf
    • http://files.gabrielmalancioiu.org/uploads/1/3/2/6/132695915/792090.pdf
    • http://files.javasisters.com/uploads/1/3/0/7/130739616/8740425.pdf
    • https://cdn.shopify.com/s/files/1/0428/5772/6118/files/13247258749.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/muxabudotopopimaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/muverolobozupepunibunedo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/vewugajepokogab.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/mabemenonusoje.pdf
    • https://cdn.shopify.com/s/files/1/0441/4462/3768/files/kakaxupoxako.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/mavotaso.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/mugajalafusijew.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/mimuwijeximajek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/nepexasewuwubuwo.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_off00005d69.bin
644ff5613662ecbcc52888399ae59f46f8f3a3ce75cd10f584e12fa57710c726		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D69 5612 bytes
font_01_sfnt_off00007074.bin
f33601021d75ff30822dfb17c372e4c8446e92bc5e0592233bcd5fe3d87a96d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7074 11208 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.