Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b13ddf6ecd022ae…

MALICIOUS

PDF

47.8 KB Created: 2020-09-03 02:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe1ce1477ab1ac23d6c66f3693d5f4b SHA-1: 356b4e483f9db31b783adbd49f5366ad9fa66c3f SHA-256: 7b13ddf6ecd022ae16d486dcfe4b12c2984d33f56ca75b14e3ed66cab32ca3f3
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=naruto+vs+pain', is designed to lead the user to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier 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.cc/wix?keyword=naruto+vs+pain
    • https://static.usrfiles.com/ugd/b8c837_1f2326bf082a4b47879fbc8d03a44528.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0f4b80d85d444b39ac73b639e11c68e.pdf
    • https://static.usrfiles.com/ugd/aef5b7_ccdedb72053c465a89166a0c74b5db65.pdf
    • https://static.usrfiles.com/ugd/5cf23b_84eafcf7998849b390e82471fea74099.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_434a6b5bff224f81bb05f093402fce81.pdf
    • https://static.usrfiles.com/ugd/b8c837_54006e7f050844a7b4ee4e91129b97e3.pdf
    • https://static.usrfiles.com/ugd/685707_4bee4f992c3e4a77b52d91afaf56e5b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_06d56adb15d54897b784d48dbdd6e531.pdf
    • https://static.usrfiles.com/ugd/469aea_31ac8f7b0ce647c28662deec01af9fe3.pdf
    • https://static.usrfiles.com/ugd/2074c9_2255c0be081d4780af1d9083e0242493.pdf
    • https://static.usrfiles.com/ugd/ab922d_5abccf1ff6894164b5cd283881a8b7ca.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_00d0af7a3df843dda937cd52f0ae2d98.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/29012072960.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/lurumamodipumo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/84238655673.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_off0000635b.bin
8ed64eb4b28de9221ae1fda6e10404167996f98c0eb98bc61f82a66c34147e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 3896 bytes
font_01_sfnt_off00007106.bin
3083b86491c0e51a1e414811231be438ed94105bb4dcae1ea610acc2c052ff45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7106 4572 bytes
font_02_sfnt_off0000809c.bin
5126b8b0849b51125bcce6b62f36987afd8c8e156ce40617a7783d7096fb82e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809C 10868 bytes
font_03_sfnt_off0000a42e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA42E 4324 bytes

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