Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c39a5afcabcfb96…

MALICIOUS

PDF

38.4 KB Created: 2020-08-29 02:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67bfcb374b0b6cd4c42358c9e8db23ce SHA-1: 7a75aaff149d3d53ce5fa10e037b89b84a68ee00 SHA-256: 4c39a5afcabcfb96bb9aa8113c117f73727a77baede4c46d74cc30e7e9679dcf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link directs to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to a movie title and the authoring application, suggesting a lure to disguise the malicious links.

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.ru/wix?keyword=h%25C4%25B1zl%25C4%25B1+ve+%25C3%25B6fkeli+5+t%25C3%25BCrk%25C3%25A7e+altyaz%25C4%25B1+izle
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/prodigygame._come_play.pdf
    • https://cdn.shopify.com/s/files/1/0461/0752/5283/files/jenejaranizanunigopaguwiv.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/51043144411.pdf
    • https://cdn.shopify.com/s/files/1/0437/1723/0741/files/kiwirosetuxujem.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1b8159fcebe48d48f88a7acf33642f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_aca79ec28290424c9177383f61468290.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf754ad8e78246df8fccd1dcdfbb113d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e0065230e734c89bf394a82127e6c96.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/nafitopubekadoritubelap.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/bagazesugedigidojidopa.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_off00005430.bin
421c5160f3c9892777ded9ee65e71e74a330fb1111ef0a156bc4ea8ae29931e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5430 5416 bytes
font_01_sfnt_off00006655.bin
511a67085a3761a389d60cae4e34a21cbbeddc84a5fdc86907526b75e8c62566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6655 11720 bytes

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