Malicious PDF — malware analysis report

Static analysis result for SHA-256 758ca3dd66a4e2e2…

MALICIOUS

PDF

38.7 KB Created: 2020-08-29 21:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15af3fb17564cdc3d701723b7047162b SHA-1: 566c8026456eeb6d146e45eec06f465ee58dfa7c SHA-256: 758ca3dd66a4e2e2b2fdbb15a51afcc1f9045f9dc312395d5477b21e0760b31b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=nintendo+wii+u+isos', suggesting a lure to a potentially malicious site. The presence of numerous links and the ML classifier's high confidence indicate a deliberate attempt to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=nintendo+wii+u+isos
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_39f7dbe0cd854a7083df6d2543a5a8f0.pdf
    • https://static.usrfiles.com/ugd/22739b_4146bfb0067e400bbaaeec42cefe0f76.pdf
    • https://static.usrfiles.com/ugd/b8c837_752b1aaa1f574dcb93a3fbfb7c4d109f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a96ba4d53c5d49dcb42b83e3e8453bac.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/52197050589.pdf
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/2728985952.pdf
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/nedibigewowemugilizunidop.pdf
    • https://cdn.shopify.com/s/files/1/0435/4985/1811/files/xevadafafufe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0840/files/adobe_acrobat_converter_free_download_for_windows_7.pdf
    • https://static.usrfiles.com/ugd/b8c837_e028fbd7b53c4d8c8f3b17ba1f156f78.pdf
    • https://static.usrfiles.com/ugd/738632_a74824e8dbfa4820a020c6f2e6c4f29c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc0c4db397c340528d5172c59936b4ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffdba306e8c349b2bb3b062d0249fb7e.pdf
    • https://static.usrfiles.com/ugd/3b0c81_0242e7925c004184a3897c10aefb6002.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/bozolebagup.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/41809249572.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_off00005d80.bin
d3afa41c5c14a892ac8fea043e7e560f3d8bc3df4d177476ec260f3a918bdacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D80 4540 bytes
font_01_sfnt_off00006d19.bin
a87d97059ccad8abff7d569c1a7e65ddfa7cc25a6e1094b9b54c99d34dd0888a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D19 9680 bytes

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