Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef8d8bb37caeff5d…

MALICIOUS

PDF

50.9 KB Created: 2020-08-30 13:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e0cc171d9a5e61327c6f8abf36d9fb2 SHA-1: e7ae6e05f7e876d8502264b1415a7a3b0b6d2755 SHA-256: ef8d8bb37caeff5d5e927aaa9f599b6fbd64c9a8648a84a4e8f50f93c600b53f
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing a movie download and the malicious URL. This indicates a social engineering lure designed to trick users into clicking the link, likely leading to further malicious content or compromise. The presence of a mass external PDF link farm further supports a malicious intent to distribute content via numerous links.

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.
  • 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.com/wix?keyword=dishoom+full+hd+movie+2016+download
    • https://static.usrfiles.com/ugd/b8c837_760f2e9d855641ee95ef767bd6cd136c.pdf
    • https://static.usrfiles.com/ugd/b8c837_59a3f8f832df406fada6ea5a6ff290ce.pdf
    • https://static.usrfiles.com/ugd/61f964_a78301933c9d484d88d87af1e43b1833.pdf
    • https://static.usrfiles.com/ugd/b8c837_a38d6fa4cb47484080ed3b800154c22e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fab6ea02989040ffa9f81bd0e7f73aa6.pdf
    • https://static.usrfiles.com/ugd/b8c837_53e8f6c744ad4c91b07e0a08e93016c5.pdf
    • https://static.usrfiles.com/ugd/97493d_d274aa36e57e44d1b5e41eda70351476.pdf
    • https://static.usrfiles.com/ugd/36f25b_37075770d216418fafe8963384f3ec56.pdf
    • https://static.usrfiles.com/ugd/906e9f_0040ed0d61bc43b7a14cd03978c11438.pdf
    • https://static.usrfiles.com/ugd/fac845_5408a1f6b7cd4cdeae0f77c26b48acf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1850561e9a84fc1acdab69ed9269913.pdf
    • https://static.usrfiles.com/ugd/b8c837_c60f0e16c4c7435696cc43e21fbc263b.pdf
    • https://static.usrfiles.com/ugd/f459ea_936f6e5b7f724175878a3f3cfd4d5a0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_58cb417fc5a44158927dfaadcf54042e.pdf
    • https://static.usrfiles.com/ugd/b8c837_685c5de96c4c4fb7b9e312da8da0a627.pdf
    • https://static.usrfiles.com/ugd/eaf48f_92223b8a1d3044b698ac676e93999eb7.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_off0000713e.bin
9dcb03aa2ef0cf4c024e93704d4239b1a66ebaa9c5f0b87548b002a47cad4fdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x713E 5680 bytes
font_01_sfnt_off00008494.bin
2e85b7e4bc707e881b3c34bdb56c85fc9b7206932f36dff7612ac786b7ea99fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8494 10656 bytes
font_02_sfnt_off0000a931.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA931 16164 bytes