Malicious PDF — malware analysis report

Static analysis result for SHA-256 a660e79aab84df76…

MALICIOUS

PDF

49.0 KB Created: 2020-09-01 04:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b29cb4713c2978b5439622aa9806b013 SHA-1: 2af1d514b61ed8760c3985b55dd51dafd0eca916 SHA-256: a660e79aab84df76f2277d48ee1e7a9492549ccb4b3b1c0edb0cb96243167a1b
150 Risk Score

Malware Insights

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

The PDF contains a critical redirector link pointing to 'https://ttraff.me/wix?keyword=critical+ops+apk+atualizado+2019', disguised with text related to a game update. This indicates a phishing attempt to lure users to malicious infrastructure. 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.me/wix?keyword=critical+ops+apk+atualizado+2019
    • https://cdn.shopify.com/s/files/1/0428/8646/3647/files/lafujiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/1658291798.pdf
    • https://cdn.shopify.com/s/files/1/0454/7008/9382/files/icaap_guidelines_sbp.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/pimategefujozezadad.pdf
    • https://cdn.shopify.com/s/files/1/0428/7712/4764/files/nifuzapel.pdf
    • https://static.usrfiles.com/ugd/81d6a4_60872cb6998b45c99641034b6f521b65.pdf
    • https://static.usrfiles.com/ugd/b65acf_4cfdf6bc0ba14738bd1130c03b1696ef.pdf
    • https://static.usrfiles.com/ugd/3be3a7_bade3001604b44868363b5d6f8da255d.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_a92fc182448743eead31cd05a9186f0b.pdf
    • https://static.usrfiles.com/ugd/6846fe_85d941f47bfc4b9bbf44ab1eb585415d.pdf
    • https://static.usrfiles.com/ugd/158fb9_8ec61260aef343f29a8be26a98e36da7.pdf
    • https://static.usrfiles.com/ugd/60933b_deed670971474bbcab1995486b11c1d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e20110fd41f4636b6ca4aa6395a8683.pdf
    • https://static.usrfiles.com/ugd/122077_0db30a5de1a44c248bcde7838713138a.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_off00007a60.bin
4d7bf37fcbd716057312f9bab7d711fba12b47e4b5848bf7cffcc716d4882d58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A60 5568 bytes
font_01_sfnt_off00008d5e.bin
d454d912a52cb9cc21253ab0bb8aac406787edd2b104efdfb93b13e426408e72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5E 13248 bytes

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