Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f31934743c3101f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-17 09:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea48f854e854c5ef758603c4a957f557 SHA-1: 8a91542e02ebac526234845c0787833125797a94 SHA-256: 2f31934743c3101fb91541648f695da552fde624f5c89c8d7e7260ced9409fc4
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily corrupted, contains a URL that matches the redirector, suggesting a lure to download a file. The presence of a visual download button heuristic further supports this attack pattern. The primary malicious URL is ttraff.com, which redirects to a file hosted on cdn.shopify.com.

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.com/pify?keyword=transfer+large+file+from+android+to+ipad
    • http://banosom.justdoitcomputers.com/uploads/1/3/1/4/131408899/pawixinokawutegin.pdf
    • http://files.jamestylor.com/uploads/1/3/1/3/131380292/3271990.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/ximorogojawuzotezebakel.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/masiguro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/28524732143.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/3951/4015/files/nilafimeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/77800344369.pdf
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/42428689883.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/zoxerupele.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_off000067a1.bin
390cf4c2d8c5b1b028f0696b51c811eed52527e3fbaece9fdb85b087c28f8a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 5308 bytes
font_01_sfnt_off00007996.bin
a67de9fe6f52b539aa03b4d6d0b9518ef7c89fb791e334851649bf417313685d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 9864 bytes

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