Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ecf6c23d2cb5791…

MALICIOUS

PDF

50.3 KB Created: 2020-08-29 23:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 911cc831aba4cb96f1396a085402ee05 SHA-1: e76451460a5c400ad5d96f29b3e3f7e69b89e438 SHA-256: 4ecf6c23d2cb5791886d460d55ec7e137eda110847cafc20309ece8b639a0ad8
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=tupac+hit+em+up+free+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to 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.cc/wix?keyword=tupac+hit+em+up+free+download
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/baixar_jogos_cso_ppsspp_android.pdf
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/80945559355.pdf
    • https://cdn.shopify.com/s/files/1/0431/7030/0070/files/xateg.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/rulubasobotadulatidawinin.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/46349795291.pdf
    • https://cdn.shopify.com/s/files/1/0439/1724/6632/files/strauss_pde_solutions.pdf
    • https://static.usrfiles.com/ugd/4b68be_2024154e755f49ba921d6b3a5cbb98a2.pdf
    • https://static.usrfiles.com/ugd/cf14a4_c3ea70379cde4ac3bb181df42787523c.pdf
    • https://static.usrfiles.com/ugd/b8c837_73af068e6b1c4270ac32a181dcdf4175.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f9de99ca94e47239de65ce3fa4bfef4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad930f9d705b458d8c3e80af9d8e9ac8.pdf
    • https://static.usrfiles.com/ugd/b8c837_042c7a517b0643419b96d90e413b3267.pdf
    • https://static.usrfiles.com/ugd/162fe6_0aae91155e2c40549405a4a8bdd2297f.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ce.bin
f51e128254d45430f8522118d44371000140e5dacb12af1beba8d6ba517c9487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5140 bytes
font_01_sfnt_off00007627.bin
cd5b5bfe30a9f2ab7c8ff16cae69a6ad428f39f5e83e572661c1163a058c8f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7627 6636 bytes
font_02_sfnt_off000087c2.bin
32ddda02a36a3d09c45473b6b6fc193ff410e5782f5933e4ad75657a515c5a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C2 12208 bytes
font_03_sfnt_off0000ae1b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE1B 4324 bytes

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