Malicious PDF — malware analysis report

Static analysis result for SHA-256 da83bcc24fef10d7…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 10:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4396cda07214610edb592b7d58633c1 SHA-1: 37c08296b2baeccaec4b93e37a43fe62f9ffd587 SHA-256: da83bcc24fef10d7b83821f0b3ae98861d3163d0f0f34a93814a3ff35cf41231
160 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links. The document body, though heavily obfuscated, contains references to URLs and appears to be designed as a lure for remote support tools. The primary attack vector involves directing the user to a malicious URL, likely for further exploitation or malware delivery.

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.
  • 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
  • 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=microsoft+teredo+tunneling+adapter+d
    • https://static.usrfiles.com/ugd/7dd30d_a41b38871bda42f694f4b5f6a500f91c.pdf
    • https://static.usrfiles.com/ugd/ea2f88_45e09d9c1d5b4b8eb29d5528d2e208b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0618a34573440f1a81cb9f089fdd66b.pdf
    • https://static.usrfiles.com/ugd/191a6d_e8ddad94fb1d4b2d95d60245a7c90cfb.pdf
    • https://static.usrfiles.com/ugd/314c35_622e780604ba42d79f2033c0fd785ae5.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/rolujakazadisurudotalazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/12926085178.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/98444870510.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/bharti_axa_elite_advantage_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/4355029892.pdf
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/wrestling_revolution_3d_wwe_mod_v2.pdf
    • https://static.usrfiles.com/ugd/122077_dada18df601641208de9642735f761c9.pdf
    • https://static.usrfiles.com/ugd/05900a_4767834d3b6e466897f066bfdde383b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4ba4d94663945188c53ab2d047448fd.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_off00005cec.bin
65454333ef63ba346c0aa51b848cd932831589cfe58b7040e480ef49b20cc8fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEC 5328 bytes
font_01_sfnt_off00006f1a.bin
b00816c6a33d284a17ed875d195af58f4680b747ae9b0fb3f4caa59b60b05474
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1A 10288 bytes