Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e6bf52a42d0efa…

MALICIOUS

PDF

43.9 KB Created: 2020-08-29 06:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 782d7f421fb919585d2d8bb520be1a0e SHA-1: 3b1d42716b39142bc51732dd37efea0d713ecc89 SHA-256: d7e6bf52a42d0efaabab8d349df1074039cc3738c6431a9f00ebd63fc4d44c02
120 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to the presence of a link to a known malicious redirector, ttraff.com. This indicates a likely attempt to lure the user to a harmful website. The document body contains garbled text but also includes the same malicious URL and several benign URLs, suggesting a link farm or redirection tactic. No scripts were extracted, but the critical heuristic firing points to a malicious redirector as the primary threat.

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.com/wix?keyword=kuroshitsuji+cap+1+sub+espa%25C3%25B1ol+tempo
    • https://static.usrfiles.com/ugd/b8c837_d92aa52cccf84597ad2fa646c5c5e406.pdf
    • https://static.usrfiles.com/ugd/b8c837_568e325d6963403fa4f5d04a7cb6b689.pdf
    • https://static.usrfiles.com/ugd/b8c837_95001d34ee8e49c4b1531279102e7e6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_66af4bdceb594c4c8cf7bdcae4fe82a8.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/bts_idol_song_musicpleer.pdf
    • https://cdn.shopify.com/s/files/1/0438/8506/8456/files/bls_acls.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/gavarifetevejevafufip.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6c297d576b348e1bf52e9d20e27321b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c70c5fef769446a9a699c2997dc841cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5755428e24941d897f5bc3441f85da1.pdf
    • https://static.usrfiles.com/ugd/b8c837_6894813311ff41af9bd0b299cfb4c72e.pdf
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/3997197151.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/arduino_mega_microcontroller.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3895/files/sign_generator_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0443/8904/0294/files/sakurai_quantum_mechanics_solutions.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_off00005e88.bin
d042067b8739b5abf14388519c70eafdc81bdf60822fead80fdde6d44d68169a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 3736 bytes
font_01_sfnt_off00006baf.bin
b2e9251c53742c0a11faa5f8d95379a5d67e20d871af90b0585633cea26e87e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAF 5624 bytes
font_02_sfnt_off00007e6a.bin
74223a2b11e0db2c51622568e72919c2f3e4c219af668f8882c3da20a06c62d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6A 9932 bytes