Malicious PDF — malware analysis report

Static analysis result for SHA-256 818bc0560ce3f211…

MALICIOUS

PDF

44.6 KB Created: 2020-08-29 08:26:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e9825576ffadba74e958aad221f3a15 SHA-1: fc5087d4300fd39fbc51295677dee2dc2a9748c3 SHA-256: 818bc0560ce3f211fd1e2c7f98855f4f7e16f30679531a895f6f27fdae02fe15
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.001 PowerShell

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure for a 'monthly business budget template excel free', and a heuristic indicates a 'Remote-support tool lure'. This combination suggests a social engineering attack aiming to trick the user into downloading a file or installing remote access software, likely leading to further compromise.

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.com/wix?keyword=monthly+business+budget+template+excel+free
    • https://static.usrfiles.com/ugd/b8c837_29d15258593e44d387c7d55473aceaf8.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4d831feda404e4c92f81e710a87819e.pdf
    • https://static.usrfiles.com/ugd/b8c837_80fc8956b0284f16be8a7e13681e53e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c257fd55316a4326a549f91f86fb7655.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/garijifegukevoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6685/files/48942610703.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/37699390863.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa1f752720434b9f9ac4a1fb941376a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_905e9cdaf7a34985affe289ff31e9f70.pdf
    • https://static.usrfiles.com/ugd/b8c837_78933278833e4d14aec1e5388937cc2b.pdf
    • https://cdn.shopify.com/s/files/1/0457/0162/8060/files/95969051758.pdf
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/acupressure_points_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/baby_g_bsa_b100_manual.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_off00006e22.bin
593ccf8e50f614797a03fd6272d0560f5f6ffdd32b25e41df337030249005ae3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 5884 bytes
font_01_sfnt_off0000820a.bin
74badb02f9fbba37ff444125a61103c82e8f4fe482f09955c0730eb7110cb9e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x820A 10232 bytes