Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a2456ae156d06b…

MALICIOUS

PDF

50.6 KB Created: 2020-09-07 00:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b9f69e21d0cf26ae904a7403435dc60 SHA-1: 250481e2ca29b1b7f06af98f6478316628f04d76 SHA-256: 89a2456ae156d06b048fbcb6e4ed110d134056075e15e95c8d98f262c971d3cf
120 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to look like a game guide. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the presence of a link farm suggests an attempt to manipulate search engine results. The document body, though heavily obfuscated, contains the string 'Rs3 barrows guide 2019' and the malicious URL, reinforcing the lure.

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=rs3+barrows+guide+2019
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/63434696822.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/6267348875.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/laxoli.pdf
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/game_calling_all_mixels.pdf
    • https://static.usrfiles.com/ugd/ec0c41_b24f8a359aec432f8b4c2d8454c1c426.pdf
    • https://static.usrfiles.com/ugd/191a6d_d5b7fe06343a413f9da9b46d468c25ca.pdf
    • https://static.usrfiles.com/ugd/87d215_af36109d463a4a01bcf593850674a29b.pdf
    • https://static.usrfiles.com/ugd/a891c0_a102c71063ae4da4a2d0aeb663eff93c.pdf
    • https://static.usrfiles.com/ugd/2ca22b_585cea3af49c48f0acf511aa891f40d1.pdf
    • https://static.usrfiles.com/ugd/74a852_ffdd879d4d434e37a8d45790bb6b17cf.pdf
    • https://static.usrfiles.com/ugd/b48b60_68df843981f44d54af9f1b014428beea.pdf
    • https://static.usrfiles.com/ugd/28b3f7_37ca13e2747e49e7a9f45745a79551d4.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/84307572252.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/40945689316.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/journal_of_acidimetry_and_alkalimetry.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/
    • https://static.usrfiles.com/ugd/a891c0_a102c71063ae4da4a2d0ae

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008008.bin
203c7f8c9f7a0fe52d1e9060d886e247d1a8f3761b987f03437829c5b06fc61e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8008 5848 bytes
font_01_sfnt_off0000940a.bin
0aa9a2e2889492fed4a107ad493a8194afae368906d4df22e306f985dfb56c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940A 12840 bytes

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