Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15ae09b394fa105…

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 20:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb5f3b55be94073bb292df99ab04c3d8 SHA-1: f73468bfdf5f530bcf965279d3ecfe82c65775e5 SHA-256: c15ae09b394fa105b6aad984c66702b7f07b12941c874e76cdabb0ef62ff7e20
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive title related to sharing movies on Google Drive and embeds a large number of links. One of these links, 'https://ttraff.ru/wix?keyword=share+movies+on+google+drive', is identified as a known malicious redirector. The document's structure and embedded links strongly suggest a phishing or malicious redirection attempt.

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.ru/wix?keyword=share+movies+on+google+drive
    • https://static.usrfiles.com/ugd/cdb50c_37ec63183d7146d89d4910b5dae0d8a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9acc0b0a0f4400c95413b4d3c671cf6.pdf
    • https://static.usrfiles.com/ugd/353d00_654768e92c36481da0f4eb1f9e516562.pdf
    • https://static.usrfiles.com/ugd/05900a_3cdb0109bf2b4ee081c8fc3201033d57.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3664/files/95052487527.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_013c730d553148c284d2d310056382a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f98010e7f1a449c86d15ffb029b3a66.pdf
    • https://cdn.shopify.com/s/files/1/0457/7093/2390/files/zojujekekadek.pdf
    • https://cdn.shopify.com/s/files/1/0457/7837/0716/files/76063463557.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_off00005e60.bin
a79e2417d03afd7b64f9264b51d1cb5432c8bc7f5835a6331683a4c872e4902d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 5400 bytes
font_01_sfnt_off00007096.bin
1bfca7e4b3e2d40e1a08c58675cb4f3c445513c99ea30129d9328c6519beede3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7096 10328 bytes

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