Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10ac5efb2f5d681…

MALICIOUS

PDF

39.8 KB Created: 2020-09-01 05:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa244e94e936b7f37ef993b00c4b87b6 SHA-1: 9e6010b83ca805b78c07ad17c51dc6b7311f9cbb SHA-256: f10ac5efb2f5d6813304317acc90c361087ecb1c72b656b49ac541cff19d6ff6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wix?keyword=informatica+powercenter+10+developer+guide'. This suggests the document is designed to lure users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=informatica+powercenter+10+developer+guide
    • https://static.usrfiles.com/ugd/b8c837_07d0c78823af452eb49be98f48523b22.pdf
    • https://static.usrfiles.com/ugd/b8c837_db409db4f6a241769f915350bc4ae4e7.pdf
    • https://static.usrfiles.com/ugd/0511f5_7a4310de7c5a4414a3d15f89655c0ef8.pdf
    • https://static.usrfiles.com/ugd/0d002d_7934fec49ff84ccbbc1ce659bb0e5faa.pdf
    • https://static.usrfiles.com/ugd/a58b01_22a2092bfea14e90a1026a6f5359eea3.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/mt-_903-_mn.pdf
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/lifizegemezepamoti.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/65595692252.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/barish_ka_mausam_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/qual__o_significado_de_uniforme.pdf
    • https://cdn.shopify.com/s/files/1/0469/0742/4928/files/rotixijojodalebigusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/kb_to_bytes.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/90667464823.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_off000052f2.bin
aaae4a531c6a61b5cc27497e7be2178860d4e39c473ee3bc4b87135f564560a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F2 5580 bytes
font_01_sfnt_off000065f8.bin
a9d63baa083aa8390ad172dc1202a4b2e5b9dc2056855a9e00594ea3d8c15fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F8 14316 bytes

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