Malicious PDF — malware analysis report

Static analysis result for SHA-256 845771e317c6d37b…

MALICIOUS

PDF

47.4 KB Created: 2020-09-19 02:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc90a0fdfd9fa6d2b9fadba031eaa4b0 SHA-1: 423dafe1fc3ef5c2115cef51e446efd4496795af SHA-256: 845771e317c6d37baf46c4d1e2a78d8ce8b0cb1de41c69bf55efb398a007c934
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm designed to lure users. The presence of a 'download' button heuristic further supports the social engineering aspect. The primary malicious URL is ttraff.link, which redirects to a download prompt for 'battle brothers warriors of the north'. Several other unknown URLs were also extracted.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=download+battle+brothers+warriors+of+the+north
    • http://lonatifim.theherosheart.com/uploads/1/3/0/8/130874160/5248286.pdf
    • http://gudiz.cbcseward.com/uploads/1/3/2/6/132695569/1998115.pdf
    • http://kobalo.klevyresearch.org/uploads/1/3/1/4/131437906/1965828.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/ansi_asq_z1_4_2003.pdf
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/tivinusanilotutivusikilin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/dufinamubidokesali.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/free_antivirus_avast_offline_installer.pdf
    • https://f327f01a-08e1-4fc9-a61b-e506c2c1773a.filesusr.com/ugd/9d869b_22f68106a6d342fcb76e6ccbaaf68bc0.pdf?index=true
    • https://7ffac2bb-c0c2-4355-81ac-e276d718390a.filesusr.com/ugd/e3325f_709550a6194b4caaa694c80e3d0e4486.pdf?index=true
    • https://3f1872d2-712d-4a13-92b6-f49a2ebc3b7e.filesusr.com/ugd/4c1554_c2f5bac4cad4483db3a57f965ee1d705.pdf?index=true
    • https://bdfafb64-c1cd-4d1e-897a-1a2d484ae33e.filesusr.com/ugd/a01749_d19d61e9968b455a859a061adf46b041.pdf?index=true
    • 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_off00007ae4.bin
d06d41515b01993eb119445f8fda20d5975c4bfd2d78deabd2a8c1ae858fccc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE4 5224 bytes
font_01_sfnt_off00008cb7.bin
40e5580b572d5cd065d645e07fe219f47283bc742d1ded494fce65a1dfd656c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB7 10620 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.