Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cad82864f1967c4…

MALICIOUS

PDF

36.4 KB Created: 2020-08-30 14:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fd4c96ed867f3713489e20a28864cd5 SHA-1: 13336c078fbd68d91e58140ede39e98fbf1bb591 SHA-256: 3cad82864f1967c44f93245437874f2a6b8eea4264feaf37b418d910fa38fb10
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=asrock+audio+driver'. This URL is presented within the document body, likely as a lure to trick users into clicking it. The document also exhibits characteristics of a link farm, with numerous embedded URLs. 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=asrock+audio+driver
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/91196747673.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/3745035674.pdf
    • https://cdn.shopify.com/s/files/1/0428/5123/8047/files/jailbreak_5._1_1_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/avery_barcode_labels_software.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6a1dd58cfee42ee9a569df62f8afcd9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b66c7751e714042a13b12e666979b85.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_535332106cf941d0af1dd93d7b6dad02.pdf
    • https://static.usrfiles.com/ugd/b8c837_c33b2911070047f5bcef2f751b8f7695.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_69b5c203934947cda78aad2ffa074337.pdf
    • https://static.usrfiles.com/ugd/286fb8_f73562eabe7b4f14a3970f4608ab1e46.pdf
    • https://static.usrfiles.com/ugd/b8c837_175f96dd976f40d58580415c47c74b16.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_off000050bd.bin
67a8ca58155743469006a800f0ea99fedcfad9096647e808127c13ddd807d5f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50BD 5012 bytes
font_01_sfnt_off000061dc.bin
04891f45abbc06876295c04af17e2095d3dde396fec95a742373658136b5ca10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 10296 bytes

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