Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1159a500db7917…

MALICIOUS

PDF

41.0 KB Created: 2020-09-02 23:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d854c28abe36977394a3a26b4dcb932 SHA-1: 1052e5f5c6160faed87469ff954cfc2df37c3d63 SHA-256: df1159a500db79177dd7ee7cf64c3341415543c5841825d168a186ae039c5cfe
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'calendar template' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link's malicious nature.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=calendar+template+october+2018+word
    • https://static.usrfiles.com/ugd/ac72e0_2df51b8c33104829b703b772512d7ce7.pdf
    • https://static.usrfiles.com/ugd/c345b0_58afb06b35614c9fa744ec866349e21a.pdf
    • https://static.usrfiles.com/ugd/738632_173893fba0c742c39e977d8402003961.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/fafosugizajojunirafamuxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2265/files/vakazugefagodefelebewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/2988597403.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/excel_data_analysis_course.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/sexurepabapisadosegovader.pdf
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/kixulaboriju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/hebrew_etymological_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/ableton_live_10_android.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_off000060b2.bin
8958e242f625e315da7713c66575587f7fa19f6bd10bf142494ccba9dbfe65c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 5700 bytes
font_01_sfnt_off0000740c.bin
479e23a366614c21736aac248da9d4cff5dda0bbed216cbe8eafdb2c1b8a484b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 10532 bytes

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