Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e67da35fa7a858a…

MALICIOUS

PDF

38.3 KB Created: 2020-09-03 11:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ab85510159c73f1932068173ed1529 SHA-1: b409ea7168cd69717d1c9a98c08b1538b288a398 SHA-256: 8e67da35fa7a858adcd6bf2f0f684c5b608f6534fd404d2842acdccdd1e4bcaf
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, https://ttraff.club/wix?keyword=machines+all+good+things+transformers, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain references to this URL and other benign-looking PDF links hosted on static.usrfiles.com, suggesting a coordinated effort to lure users to malicious sites.

Heuristics 3

  • 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.
  • 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.club/wix?keyword=machines+all+good+things+transformers
    • https://static.usrfiles.com/ugd/dfb5f8_404c2398aa3647309ed373d0f0230714.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ecaac61b1884edda066c18d4a8d1f6e.pdf
    • https://static.usrfiles.com/ugd/a01749_2b08ae2f508f4846907b0d7a09cc86a7.pdf
    • https://static.usrfiles.com/ugd/9cb927_92cff28868af499490eb108b62258290.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/junolanijiwudusig.pdf
    • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/48019261523.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/pazuwakozenivipopeva.pdf
    • https://cdn.shopify.com/s/files/1/0462/5340/8405/files/72680563364.pdf
    • https://static.usrfiles.com/ugd/61804c_efc5665c378b4fbaa41cc9f9fcbb532f.pdf
    • https://static.usrfiles.com/ugd/a891c0_9284d494d01b4fddba76b66279df1bb9.pdf
    • https://static.usrfiles.com/ugd/c34aa9_e6464ff50f2c4c7f8c978120090d8559.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4105a9085274f2aa15636327422548c.pdf
    • https://static.usrfiles.com/ugd/3d514e_da6805a6cc3f468280cc1f4ce4e38d02.pdf
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/khatu_shyam_ji_bhajan_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/pokemon_insurgence_tile_puzzle_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/nirukidavugodevulapiziwux.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4199/files/muscle_fitness.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_off00004b4b.bin
a9016725b654c591799732ccce3911624a6bbf7c4aaae3584c7b68fb28d2c268
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4B 5228 bytes
font_01_sfnt_off00005cd9.bin
95a169c661ca11b5e69a80da04976dd45684c372bd6c4b5203b85ad23a12b84e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD9 9680 bytes
font_02_sfnt_off00007df6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF6 4324 bytes