Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a6ac63c3be1770…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 23:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0367f8653f0cb0fe6f3cc8157f475c8c SHA-1: 0c6797e3e429626b0aef42b8e1a1951757898511 SHA-256: 12a6ac63c3be17709aa7f748c3de4895b785371e60e833ee9b482a5f1e1a2f8f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is likely used to host malicious content or phishing pages. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute further malicious files. The presence of a password archive lure heuristic indicates the document may be intended to trick users into downloading an archive that requires a password, which is often provided in a separate, less scrutinized communication, to bypass security gateways.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=cute+baby+songs+ringtone+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/f8de3e_86cd06205f4f49a4a1d6f09890fd1b79.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cd6842a3f7347c39226023b7cdfbb40.pdf
    • https://static.usrfiles.com/ugd/b8c837_45efedfe25864268ad47df863318a9b9.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0074/files/22960083265.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7504/files/xewebajibidokirolox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/performance_appraisal_review_letter.pdf
    • https://static.usrfiles.com/ugd/238140_276c5db8c14d490aaf96c72b043aa23e.pdf
    • https://static.usrfiles.com/ugd/6c98bc_c47a2745575146fa800e55120b15cf0c.pdf
    • https://static.usrfiles.com/ugd/6c032c_ed6f0f1142d94899a198fe2e511ab139.pdf
    • https://static.usrfiles.com/ugd/5bb01c_891bd31b95f54068aad69b4ab58e119f.pdf
    • https://static.usrfiles.com/ugd/b9801a_05221ad82aac4715bb4d192c4b6ff529.pdf
    • https://static.usrfiles.com/ugd/e78b77_95a8bac07f7849c3907bd8484d9c6a34.pdf
    • https://static.usrfiles.com/ugd/c12414_9ec2fc733a4647e69ed387a92716e40e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_b0e443cd484d47f69c7fe80979ff43b6.pdf
    • https://static.usrfiles.com/ugd/a2e20a_083bba04c0a14ee99d6fccffc0fe5921.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e35.bin
237a58d0c7d29f87a13b4b8f4d674f43db3fc9887917396728b2e20b5ba26204		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E35 5052 bytes
font_01_sfnt_off00006f7b.bin
c9069c41b7539685e7d615365b0c666879a61770c1d94d60331a13d9afa96433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7B 10076 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.