Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f250bcd822e33d…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 21:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bed0492c1ed71b666418f93f25d46fc SHA-1: 5604173dfac12c2926142d409722abd3c72b7322 SHA-256: c6f250bcd822e33d6f2f32267b9082bd1492ecf5f18031e33e3dbbf599695642
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure. The presence of a visual download button heuristic further supports the attack pattern of luring users to click malicious links. The primary malicious URL identified is https://ttraff.cc/wix?keyword=allshare+app+samsung+tv.

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.cc/wix?keyword=allshare+app+samsung+tv
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/xikigevonipazano.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/zupizomokolemita.pdf
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/94276821805.pdf
    • https://static.usrfiles.com/ugd/b5aed9_97b4dfa63bf04ab9ba0e7f917cc16cf5.pdf
    • https://static.usrfiles.com/ugd/c75f60_520b6928cd5d4cc090fec6509a1fbb2d.pdf
    • https://static.usrfiles.com/ugd/b88e3d_9599634f25cb406288a3cfd15c2d2120.pdf
    • https://static.usrfiles.com/ugd/1f2646_d41109ba44014c22a2012de11a213136.pdf
    • https://static.usrfiles.com/ugd/db1da1_fd4bc6fc26ab46eda4c68e52cd36213d.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/kifubikifemokomar.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/de_broglie_equation_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/46210216394.pdf
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/pandora_box_myth_worksheets.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_off00005ab3.bin
11db34385305c5cbf4c41f80c29bc4d4060503fbf593ca05646fca1453cfee1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB3 5280 bytes
font_01_sfnt_off00006c83.bin
07c87b640bc58a26a8b569366ffea6cee15ff201d586fb74b687fc712884e2e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C83 10060 bytes

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