Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7243cfce722429a…

MALICIOUS

PDF

32.0 KB Created: 2020-08-31 05:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83a068163c08ca7d17072d885c652f7f SHA-1: 8f9ee78ba1fc21fa69dcb4b65b7d4078f5ef8ac6 SHA-256: d7243cfce722429a9def6f80d80f2c6ba62693d2cd02c392c247b57185473b3f
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as an installation manual that redirects to a known malicious domain (ttraff.com). This is further supported by heuristics indicating the PDF is a redirector link and a link farm. The document body is heavily obfuscated, but the presence of the malicious URL is clear. No scripts were extracted from this sample.

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.com/wix?keyword=teknion+altos+installation+manual
    • https://static.usrfiles.com/ugd/9cb927_e183ac03d4ad436f8687a0ada35bf223.pdf
    • https://static.usrfiles.com/ugd/dd4472_186467dc419a43beb43a570ca329dfe5.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe114e92fed432bb41651a335f86c31.pdf
    • https://static.usrfiles.com/ugd/469aea_e1117a4600f34cb4800bd550ed9b405a.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/veritiloxoxafegojar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/85482420565.pdf
    • https://static.usrfiles.com/ugd/b8c837_0827ac60d8f445adb3d7860bebf65dfd.pdf
    • https://static.usrfiles.com/ugd/963627_cd880b7d046c44adac0299699d88d2e2.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0017/files/sexok.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/ams_arbeitsbescheinigung.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_off00004294.bin
3bab01f8bba084e9004e33478713abc8b89f9a346071bcbd3345cfacdf9496b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4294 4748 bytes
font_01_sfnt_off000052a4.bin
df137d6407a761c7c62f1e01287ad2efc6b1d67a3808aa8b4382f08bad0a0d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A4 9688 bytes

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