Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef9b0b7ccda8411…

MALICIOUS

PDF

44.1 KB Created: 2020-08-31 02:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18c9449d2e5b23b55147080e3a8bedbc SHA-1: 456fed0e2318a5b62f61e2bdb5b096c4923a0c4e SHA-256: fef9b0b7ccda8411b57af41f9ce252524caf37a7eca013a440f2d6e986558843
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment 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 link farm, with numerous embedded links, many hosted on 'static.usrfiles.com' and 'cdn.shopify.com'. The presence of a visual download button lure further supports a malicious intent to trick the user into clicking the malicious redirector. No scripts were extracted from this sample.

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.com/wix?keyword=zip+gta+5+ppsspp
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/7565596624.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/64460628443.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/guromojisupaboguwawe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/najipafolagenidizez.pdf
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/16735327276.pdf
    • https://static.usrfiles.com/ugd/b8c837_165ba7408e5c438182cb6fd99e60f9c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_df1a1c20865c4c6e9d4104b2398e5560.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9a42f47445e48849989b37a702e4ada.pdf
    • https://static.usrfiles.com/ugd/67e251_7ad37a691e98401883136a2cd7357c5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_460d0313e2ff4da7bcfcd08254136c0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_04c8d2ed750348cc964112c5802ceda1.pdf
    • https://static.usrfiles.com/ugd/b8c837_649517d3e2b14ba1816d4229783b3e13.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5c3234a0c6d4ca9ad8487bff3f9df42.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9dc17f58ea457fae53f3754bd9556e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4599b1e1f34d4d9885625c493d52c647.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_off000063d2.bin
6c992932cf9272c112dca0b45172a9b6e9408ac608b30e7fb4a794d28e6355b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 4940 bytes
font_01_sfnt_off000074b8.bin
4848240232a47107238aebd87bf5a51d755e801f30fe851afa33c0fa11721650
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 2572 bytes
font_02_sfnt_off00008000.bin
e36f70c35237730657bc4ef4a333b42a08678cc0ad634739b0c4f5a504390178
pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 10440 bytes