Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfe3c9fe1f8864f…

MALICIOUS

PDF

51.0 KB Created: 2020-08-29 18:15:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dcd56d80e139b41eb3eb8fa621f425d SHA-1: b2a2d8c5292de07570c0ea7af23c7dc47d573def SHA-256: 9bfe3c9fe1f8864f9b2f0b177c0584528e56289e4a2d1b18089199066641efb1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=malos+vecinos+cuevana+2+malefica'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to 'static.usrfiles.com'. The document body, though partially corrupted, contains the same malicious URL, suggesting an attempt to lure users to a malicious site under the guise of providing media content.

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.com/wix?keyword=malos+vecinos+cuevana+2+malefica
    • https://static.usrfiles.com/ugd/b8c837_3345a827e4fb4697a4a0c51487dcfd7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_496c8eb36ba64e1a8770a0d32e39d74c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a2f204753934589af06579c39a91044.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae687dded894163a8793a6b9aac9a69.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/zoxokosesilane.pdf
    • https://cdn.shopify.com/s/files/1/0435/8881/2959/files/digezepexudax.pdf
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/muppet_treasure_island_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/19909571040.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/zegolaru.pdf
    • https://cdn.shopify.com/s/files/1/0463/6019/9323/files/79198621757.pdf
    • https://static.usrfiles.com/ugd/b8c837_afbd54352cb94bdeb28929a7b297f7fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_71205bbc53eb4b099c60c9424b31e795.pdf
    • https://static.usrfiles.com/ugd/b8c837_42717236b40443d0974665c2105e88a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a35a52cb868b4ccfbcf705065ad8575a.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/
    • https://static.usrfiles.com/ugd/b8c837_6a2f204753934589af06579c39a

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087cd.bin
37f1f50532b2e3ff3cbeeaaffde6a48ce12119321214e05294412f4f64c041fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87CD 5128 bytes
font_01_sfnt_off00009940.bin
1a8940a74a7997ed83c2761ec171cd5b805767e676505099200b6c0f7af7d3cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9940 11148 bytes

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