Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1573a9aa1511f8…

MALICIOUS

PDF

41.5 KB Created: 2020-09-05 19:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 890e74638ade99982dd12af02761c0c3 SHA-1: 0666861c3b5bfc857dd101f0ba90d1f2a55ca2f8 SHA-256: 8e1573a9aa1511f8d1b493a73f190b114ad0222c186d5395ab56d07ac795f829
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'voter registration card template' and includes the malicious URL. The PDF also exhibits PDF_SEO_LINK_FARM behavior, embedding numerous links, with the primary malicious link being ttraff.link.

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=voter+registration+card+template
    • https://static.usrfiles.com/ugd/575363_646cad496f8f47f2addc9fc62ba9917d.pdf
    • https://static.usrfiles.com/ugd/7e6083_b21c02e6adc04ede85a5e811fc73d126.pdf
    • https://static.usrfiles.com/ugd/70a38d_58f60160edf64ee7aa9b08b50121a0aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_d03c5b973cf44b979260c8ccfe8d9224.pdf
    • https://static.usrfiles.com/ugd/299074_9e6f6875dcce4a81b87d83b678a8c2c9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0433/7913/0531/files/toyota_corolla_verso_2005_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajovi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/27604185918.pdf
    • https://cdn.shopify.com/s/files/1/0433/3083/0494/files/79208053071.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/achilles_tendon_repair_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/bexisinafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1998/5319/files/8942831534.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/85961254160.pdf
    • https://cdn.shopify.com/s/files/1/0447/7875/0101/files/37833385214.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_bef70c79cfab4a509933887347d06a57.pdf
    • https://static.usrfiles.com/ugd/9cb927_ae0557dd47474869afff11e584f36e8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_5109253166b049b291c4531faa663632.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e178cdb969847e5933a8d0d38cee5e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_94ef65766b72413da4ffe1e51e63d629.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_off000063fc.bin
0c2dc1b2e72764e1bbc1f89622774374e79ace26ce9da23731f42a9f29df5715
pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 5356 bytes
font_01_sfnt_off00007625.bin
5350bf4b5df22d93e36b59f3783db177138ee8f64bd4f2a18ce9303652f02568
pdf-font-stream PDF embedded font (sfnt) at offset 0x7625 10120 bytes