Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65735d5ec25d11f…

MALICIOUS

PDF

53.5 KB Created: 2020-08-22 23:23:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7081be44723ac093c37da21915fc711d SHA-1: 98ba659801b034f9e30932216315b61c792a041e SHA-256: a65735d5ec25d11fe4ddbe8d35a1cbdc3e72395f1b834e4305054ac03b510213
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though partially corrupted, contains text suggesting it is a lure related to 'Ayurveda cooking for beginners pdf'. The PDF also exhibits characteristics of a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, with numerous external links, many hosted on cdn.shopify.com. The primary malicious IOC is the redirector URL.

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/pify?keyword=ayurveda+cooking+for+beginners+pdf
    • http://vimemijug.sobellkarate.com/uploads/1/3/1/1/131164250/734495.pdf
    • http://jonen.homilytools.org/uploads/1/3/0/7/130739561/litena.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/puzevi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7794/3967/files/aqualine_pool_salt_manuale.pdf
    • https://cdn.shopify.com/s/files/1/0447/1144/4634/files/41938008949.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/column_sorting_sapui5_table.pdf
    • https://cdn.shopify.com/s/files/1/0428/9773/5843/files/36597502860.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/xovigeduloluwezevet.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/93215415083.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/alarm_app_android_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/engineering_leveling_guide_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/firuvetoduzomumutipotedez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008629.bin
9ccbed29440b986748a69d16a406c76824627284a31bf76d34f4830436656e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8629 5448 bytes
font_01_sfnt_off000098c2.bin
368d1eb88c9d2add3d469d4b10e810f2be6e840c9cb18bd57086d5053540d4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C2 10024 bytes
font_02_sfnt_off0000bb19.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB19 4324 bytes

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