Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6a41c3dd404dfb…

MALICIOUS

PDF

44.9 KB Created: 2020-08-16 19:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8acfe030a45514b21643214a40cc366b SHA-1: b63daa6c74b029261994d780b1fde42ec8a2e60f SHA-256: 9b6a41c3dd404dfbf8820761f3704fc5b38dc7fddae53202209eb3a615253d23
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests the document is designed to lure users into clicking malicious links, likely for phishing or to download further malware. The embedded URL and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirm this malicious redirection.

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=catriona+gray+miss+universe+final+answer
    • http://files.hotrodhenrys.com/uploads/1/3/1/8/131856276/a0b6c900e9a0e88.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/82349507970.pdf
    • https://cdn.shopify.com/s/files/1/0439/5266/8830/files/bengali_newspaper_ei_samay.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9794/files/kebusibenoxijib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/lawofefagenuseza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/supumux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/dotamixomi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/mubopilileketovenetosid.pdf
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/rogogakosatikewe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/winolazonidaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/aprendizajes_clave_historia_educacion_secundaria.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_off000071a3.bin
a7da5f8212eadda7188d5251aeb178ff816d4d6ec81045a56a3a678bfef0c3b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 5244 bytes
font_01_sfnt_off0000837d.bin
d4d078e88cd90b8493304fc7ad93e36a4fcff35804712603894911bd73adb7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x837D 10408 bytes

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