Malicious PDF — malware analysis report

Static analysis result for SHA-256 483f3ca25522dc3d…

MALICIOUS

PDF

46.5 KB Created: 2020-09-06 03:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 540c086cdb0bfcdab4744eb542bfbcfe SHA-1: 3e01325c89d7cf1656ba51475a78090a2c754c02 SHA-256: 483f3ca25522dc3dcf5002fc05dd631c962db3ac470e35a81b269771461348b7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a domain associated with link farms and redirectors. One prominent link, 'https://ttraff.link/wix?keyword=hamburger+hill+movie++480p', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to movie downloads and the redirector URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, and the primary malicious activity appears to be the redirection to external malicious content.

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.link/wix?keyword=hamburger+hill+movie++480p
    • https://static.usrfiles.com/ugd/c1c462_4c528c3fd2a24604a2444dda13fe8f31.pdf
    • https://static.usrfiles.com/ugd/c0fca2_8bfe46fea7274f5a820273aa924d5bda.pdf
    • https://static.usrfiles.com/ugd/05301a_81199b4e8d89428fac3023735e1e9c00.pdf
    • https://static.usrfiles.com/ugd/c0518c_537865de201e453f8e217c16b9c0af96.pdf
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/53105004694.pdf
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/selenium_webdriver_tutorial_java_free_download.pdf
    • https://static.usrfiles.com/ugd/35f767_cf8f03bdac1b4750bfd3833f9003eef1.pdf
    • https://static.usrfiles.com/ugd/82e28d_041802074c4743e7bc8784164a3141f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_60aefdf27c8640259bb89050a311a25f.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_fb42a3d1cfb246119cc1f42a725c33c0.pdf
    • https://static.usrfiles.com/ugd/628a76_95a71791e29c4c4dbb03d6671b85bcc0.pdf
    • https://cdn.shopify.com/s/files/1/0437/2037/6474/files/browsec_vpn_apk_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0507/files/rudezuvaga.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4843/files/water_cycle_process_steps.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/falixasugojux.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_off000076fe.bin
252ae25d49972ab23e5bbfb9ebf1843204682302df639d60e147049159ff3d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 5640 bytes
font_01_sfnt_off00008a0e.bin
e3a7b2bf97023acadae44bb60b4dde2a3fdbdedd85364c49ccb33a0c44a15ce0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0E 10372 bytes

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