Malicious PDF — malware analysis report

Static analysis result for SHA-256 2984adfe52682733…

MALICIOUS

PDF

38.3 KB Created: 2020-09-01 00:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6daa0bbd55915cfdff2867df969dd871 SHA-1: b4057be1b415a68f83e2a0b93b10fcae87b7c565 SHA-256: 2984adfe526827336cc50561af2ff9e85565e4ec1fd1311b91f0b584f453d8f1
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.com/wix?keyword=20+gauge+galvanized+steel+sheet, points to known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of the malicious link is the primary indicator of compromise. The file's purpose is likely to lure users to malicious sites through this link farm.

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=20+gauge+galvanized+steel+sheet
    • https://static.usrfiles.com/ugd/cafc24_699e690f39424757965a32b089e57998.pdf
    • https://static.usrfiles.com/ugd/917232_de1ec5602ebb4a94b181f00feccaeffb.pdf
    • https://static.usrfiles.com/ugd/b8c837_052f2125847e49058c83956fdea2c9cd.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/antivirus_pro_apk_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/nasamigumivugofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/rakape.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/agar._io_android.pdf
    • https://static.usrfiles.com/ugd/e5a943_9d1b9a55eaf144fcb4114d17a542fe9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_39a44fc9681047a7a18a1bb62915b09d.pdf
    • https://static.usrfiles.com/ugd/b8c837_712e1fddd27c4c2fa7f0ad69cefec446.pdf
    • https://static.usrfiles.com/ugd/b42fd6_1bf2a2218ac04a6d83413d9042389302.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006122.bin
04c70bd040e2a79bdc2edf3ef88b3ef87c294bf3343c94bdba8335dd00732f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6122 5280 bytes
font_01_sfnt_off00007324.bin
0bb057144754fbaac32424c3696b7fb7c55d1c992e4b842515be49d7061446f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7324 10116 bytes

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