Malicious PDF — malware analysis report

Static analysis result for SHA-256 8babade60894d288…

MALICIOUS

PDF

34.3 KB Created: 2020-08-30 22:37:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4afda16d528694f5bdc1eca9116e469 SHA-1: 6de1c87847ae56234d1c3f3b093459e9df9844fd SHA-256: 8babade60894d288dbf4010db7f640122db502e993e54731d4ec63ab40f2a0ff
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document is designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to trick users into clicking. The presence of numerous other PDF links, while many are benign, contributes to a link farm pattern, often used for SEO poisoning to improve search engine ranking of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=let+it+be+piano+accompaniment+pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/40202863216.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/41851744858.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/30380788007.pdf
    • https://static.usrfiles.com/ugd/0aab01_54c684e7d8914ea1a4c0c5feac63af03.pdf
    • https://static.usrfiles.com/ugd/ace02d_e36e68a69b6a41c9b6c39e9e77dfa879.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5cd443c79724641a86ad40e51ef8375.pdf
    • https://static.usrfiles.com/ugd/a2d007_08164d85586240d880a22b301ad29f19.pdf
    • https://static.usrfiles.com/ugd/b8c837_07840ca1bf734c56adf1ec0a5d14d843.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_24cee55c006e475d89195ed6dd5d2625.pdf
    • https://static.usrfiles.com/ugd/74a852_d48e57a7be444be68097d6574e2c1fd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_517bb12ce35b4db5bed64280fa04d8ff.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_off00003ea0.bin
ddc50cd131a2fbc4aa6ec1fde0a75137aceed4b21ae9a02d89c41bdf9016bdb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EA0 4864 bytes
font_01_sfnt_off00004f04.bin
cad6b794ca653e362a2b8d06063d6061ca766495bf2fe296baa96f6c08076de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F04 9508 bytes
font_02_sfnt_off00006eb1.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 4324 bytes

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