Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ea2a8c2eee4f0e…

MALICIOUS

PDF

41.3 KB Created: 2020-09-11 16:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd0e7b94b01273f8cd054646e8125cab SHA-1: f74fa83ee7f49a8eab7c5535a803df8f57fc79e7 SHA-256: c2ea2a8c2eee4f0ee6e150dd2c52a2c0b5e2017815a6a5cc7bd0d608afad93cc
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector URL. The primary malicious URL identified is https://ttraff.cc/wix?keyword=lagu+ashilla+zee+kangen. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious redirection attempt. No scripts were extracted from this sample.

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=lagu+ashilla+zee+kangen
    • https://static.usrfiles.com/ugd/2f07a1_8866888fd5564f0b81a359f3bbc65564.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_41799974dd994adaaabab268348d6767.pdf
    • https://static.usrfiles.com/ugd/430cb2_31e79bcfe9294f56a088acb314ab2cda.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/gozozezeluter.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/en_honor_a_la_verdad_martha_alicia_chavez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/4477013822.pdf
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/nanozovugif.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/getiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/0445/9168/files/lasumizegewowuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53567737566.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gerufopujugeto.pdf
    • https://cdn.shopify.com/s/files/1/0458/0288/1190/files/91413468502.pdf
    • https://static.usrfiles.com/ugd/d99ef3_ae3e6a3aeced4dddb40c16c7dfb8dd81.pdf
    • https://static.usrfiles.com/ugd/cdb50c_ced78f1e22234619af41e0516b31af9d.pdf
    • https://static.usrfiles.com/ugd/dc98cc_3731b09fe3314d158d16b366192092f5.pdf
    • https://static.usrfiles.com/ugd/21e6f2_3f65f14e427b4086bbf2e784c56f414a.pdf
    • https://static.usrfiles.com/ugd/564d2e_b45ca4a9bbc64749a5d9a9ecc0f39fe9.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_off0000649c.bin
fa82c43fb0f190230e74e105e914d92e05b2c6d4e732ad66ccb47c6862482fc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649C 4904 bytes
font_01_sfnt_off0000755b.bin
a81f4cbd3ac905af9e82e47f7c7e6050bc6268596af03e123ad45ce2a9115ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755B 10112 bytes

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