Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fccdec03028d08…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 13:38:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40c8e40996cd3598e6cc47991df0f971 SHA-1: 28241974e9c1c1dfc3daa341fb921d222ec31518 SHA-256: 87fccdec03028d08d4f560a713a71eb6963e36835c03eebb1aa313c88feb4455
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.com/pify?keyword=theeran+songs++maango', is identified as a malicious redirector. The document body contains garbled text along with the suspicious URL, suggesting an attempt to obscure the malicious intent. The presence of multiple links hosted on cdn.shopify.com, even if some are benign, contributes to the link farm pattern.

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/pify?keyword=theeran+songs++maango
    • http://wagakub.ctsmn.com/uploads/1/3/0/8/130873822/lajedukime.pdf
    • http://files.mrsgwinnsbooknook.net/uploads/1/3/1/4/131407106/ragazikozipite.pdf
    • https://cdn.shopify.com/s/files/1/0431/7705/0272/files/zogipisijetojukorewajavax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/5168649318.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/78077003558.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdf
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/48682876615.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2892/files/13415857125.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wogol.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_off00004e92.bin
395fb8c81a5cc1a1f7224fa9372ad3841b312787669fb97c9ab023c3c166993a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E92 5016 bytes
font_01_sfnt_off00005f7a.bin
308fbadb7492748578fe5ebd73a80cd06d0805ea1ec3c6e3ddb2c29e643dfc7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7A 14892 bytes

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