Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e15298297b91e4b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 11:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba243925f838f6f53b278b944fe68832 SHA-1: 3db669836c13afea34249ca14a8b82c976f85a03 SHA-256: 1e15298297b91e4b8ac8988c6c0857fde79d468bd7d4d03ec44abeaa79abf1f0
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary URL pointing to a known malicious redirector. This suggests the document is designed to lure users to malicious content by obscuring the true destination through multiple redirects. The ML classifier also strongly indicated maliciousness.

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.cc/wix?keyword=pronomes+e+adjetivos+possessivos+em
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/23698565647.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1195/files/european_platform_economy_summit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/5307825730.pdf
    • https://static.usrfiles.com/ugd/162fe6_e052895e307649cebba99b3ad8dab6aa.pdf
    • https://static.usrfiles.com/ugd/b85eb0_838412b36185480393ad8ec21e79b4b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_4163bf30943147c6a16d8248eb7af845.pdf
    • https://static.usrfiles.com/ugd/b8c837_563c20ddf4b743918a3473b6aaa67e21.pdf
    • https://cdn.shopify.com/s/files/1/0428/2623/6071/files/28047990731.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/66504836603.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/what_are_all_the_nba_teams.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/wexovunudepaderenasili.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_off000055f8.bin
bdc6862ded7eb97401ec34d672a6c7cdb5692af7acd7ee1b767eeecb380bf3df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55F8 5000 bytes
font_01_sfnt_off000066d8.bin
1beae196d90d2765f2c10cc6c87557d5651f21820a3c3fce7e55b777d1def384		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 11968 bytes
font_02_sfnt_off00008ba7.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 4324 bytes

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