Malicious PDF — malware analysis report

Static analysis result for SHA-256 477e9a1b25d929d0…

MALICIOUS

PDF

37.7 KB Created: 2020-09-02 04:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c3c858e4443611a10b6eb0589ea7683 SHA-1: 4a00ec6750fbf093efd77ff7bc29e7dbe58b2a19 SHA-256: 477e9a1b25d929d0efed668627be7060fb658f555c787251897e332989a314b6
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection tactic. The primary malicious URL identified is ttraff.link, which is known for redirecting to potentially harmful content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=chadariya+jheeni+re+jheeni+female+ringtone
    • https://cdn.shopify.com/s/files/1/0438/3077/1869/files/android_auto_install_app_programmatically.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/wigikarutopizujatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/nubasiletezaxajelo.pdf
    • https://static.usrfiles.com/ugd/6812d7_33c9a11f67b54536a6d1ac979ea2355a.pdf
    • https://static.usrfiles.com/ugd/b8c837_38c8f7ec8ff14a9e93db357aff1485b5.pdf
    • https://static.usrfiles.com/ugd/db80c5_064ad5bf73124c27b003a9915f7e35ae.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_80fea5cef0c444b4885fee06e3df1b03.pdf
    • https://static.usrfiles.com/ugd/221f3a_81c2bd28514c4c55b80ee71382be3d57.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_6497eae5316c4d9b91ccacda0352f63a.pdf
    • https://static.usrfiles.com/ugd/73f3b0_7f0cfd00a9bf463f89cfca2031e39c55.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a099aa030a84d0eb09d07f9fefb500f.pdf
    • https://static.usrfiles.com/ugd/ac72e0_1487c4a5e5644fe5a721cabedc144544.pdf
    • https://static.usrfiles.com/ugd/db1da1_3777cb8339ab4aada9b26ddb491d67c5.pdf
    • https://static.usrfiles.com/ugd/ea78e0_077d5c277b4e43528abbb0da81c87800.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_off00004fe6.bin
047cfdeb1a4a1e7146698a610c6298226ad6cc8124d967bf7750de301d2f4536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE6 5224 bytes
font_01_sfnt_off00006191.bin
74ce118ae858bce3e6e7fe1a567005fde2424f9649137d34c2c560d9fa11e573		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6191 12436 bytes

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