Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe4319b15b79a2a…

MALICIOUS

PDF

64.7 KB Created: 2020-08-30 11:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60e951652a4450706765bab03b79ba8d SHA-1: 518906b886d31cbd01b50112019b623d8b4cb4ff SHA-256: 1fe4319b15b79a2a3b3b8d7e4212bb9596222dedf127619305e5bb79d74ae0f5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, likely for SEO manipulation to increase visibility of the malicious content.

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=degree+of+comparison+worksheet+for+grade+4
    • https://static.usrfiles.com/ugd/b8c837_e2bbc7df612f44b98b4b924f4a1a7a61.pdf
    • https://static.usrfiles.com/ugd/b8c837_db5137a3c7904d6e862e689d545f7115.pdf
    • https://static.usrfiles.com/ugd/ac72e0_547dd69a05ab41c1ba6230fe38d48e70.pdf
    • https://static.usrfiles.com/ugd/b8c837_89ad23fa5c5d4c0ca8e745aeb109c8d4.pdf
    • https://static.usrfiles.com/ugd/ab059d_139b337701224660bd70ca72eccaecba.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/gejuvupamekidepelifaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdf
    • https://static.usrfiles.com/ugd/7d21c0_8622999a6d83449b8c7c991cd7aeecea.pdf
    • https://static.usrfiles.com/ugd/77941b_65be9923bc5c490babdc1db89d039d35.pdf
    • https://static.usrfiles.com/ugd/b7ab08_31439587f6af4c9ab2a5eaae10d06318.pdf
    • https://static.usrfiles.com/ugd/33c377_4d06b6dc28cf484184f3e33520757a45.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd4d65ea4f9444d2a5a347f9902067be.pdf
    • https://static.usrfiles.com/ugd/b8c837_32c6312b111143e9b23d8365ff89c140.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_off0000b537.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB537 2828 bytes
font_01_sfnt_off0000bf31.bin
c1902b7eca29f31a7833ddb3e2303b6fdd5e5fcb83bec8393ab5948edb9dfa85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF31 5780 bytes
font_02_sfnt_off0000d2d2.bin
06e770522af69a0f052d5ea5660981a8d8c73a5deb87bf590db8b7efa354b96a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D2 10024 bytes

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