Malicious PDF — malware analysis report

Static analysis result for SHA-256 874fbf2ed867dcf9…

MALICIOUS

PDF

50.2 KB Created: 2020-09-01 00:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a877708153ba10e38d064e53904a6cd9 SHA-1: 578d5a15f948eea3bcda16b17ace7f934468d41b SHA-256: 874fbf2ed867dcf9d6aae3b750af9287cbbcf81f22a69cd0fed345bac2f12370
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text related to credit reports. The document body, though partially corrupted, contains the URL and text suggesting a lure to manipulate credit information. The presence of numerous external PDF links, many pointing to static.usrfiles.com, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites. The primary malicious URL is ttraff.cc, which is flagged as a malicious redirector.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/wix?keyword=remove+closed+charge+off+from+credit+report
    • https://static.usrfiles.com/ugd/724fb5_8a76743776224e20aea20277b114889c.pdf
    • https://static.usrfiles.com/ugd/89363e_3d5ee17f31ff4cd0b8f3ff77c8afd856.pdf
    • https://static.usrfiles.com/ugd/1a89c8_282c8217bde44f1785b3f8b4ee1af83e.pdf
    • https://static.usrfiles.com/ugd/599f1c_e8ca54e4da25435dad74119c5fdc41b3.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/89114507251.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdf
    • https://cdn.shopify.com/s/files/1/0437/1274/1529/files/20521030746.pdf
    • https://static.usrfiles.com/ugd/9e53d4_d0ec9807674545c58e0573800a0393cb.pdf
    • https://static.usrfiles.com/ugd/89363e_734f6e33b5444ae59db64ebd5e424536.pdf
    • https://static.usrfiles.com/ugd/9734e7_33a911e34f0748b5b1e7957004185a4c.pdf
    • https://static.usrfiles.com/ugd/10e3af_f38e554ea38e4faeba5e6df39a45bcb5.pdf
    • https://static.usrfiles.com/ugd/c068f8_e15b90125144427f9eed9be6bb37099c.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0904/files/lexique_minier_anglais-_franais.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/babape.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/5650182034.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/origami_aviones_de_papel.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_off00007573.bin
f4a2ad5d7fbdc0d308448bea3ee1e62cad4a532c80919d7371a96d40a1dda5dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7573 5316 bytes
font_01_sfnt_off00008794.bin
d8f390ee5a81e3114c7453fe85a93e705edb44760b9125c73c1d6bb70ef97deb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 11400 bytes
font_02_sfnt_off0000ad29.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD29 4324 bytes