Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66e9554a0df7afc…

MALICIOUS

PDF

48.5 KB Created: 2020-08-02 13:22:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a6a7339a9025c4e672d6aa9017440d4 SHA-1: 756fe1e9c06447f6ec608e69683c621c0216888a SHA-256: a66e9554a0df7afcbb93bd92e1be7761293cf1b0100ba2f72fe0b63454124764
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=ordeal+by+cheque+pdf. The document body, though heavily obfuscated, contains the text 'Ordeal by cheque pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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=ordeal+by+cheque+pdf
    • http://files.abroaddownunder.com/uploads/1/3/0/8/130814784/c528f3adcfe.pdf
    • http://files.hairloungeltd.co.uk/uploads/1/3/0/7/130775506/8531384.pdf
    • http://files.litchfieldgardenclub.org/uploads/1/3/1/8/131856072/ximegado.pdf
    • http://files.canadamt.com/uploads/1/3/1/4/131409574/5612647.pdf
    • http://files.3riversmuseum.com/uploads/1/3/0/7/130739227/derijirafijugu-vulenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/gatuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/30851783772.pdf
    • https://cdn.shopify.com/s/files/1/0433/8165/3655/files/82281907049.pdf
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/refiseragipezuvalufasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/nefovutejixatitesusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/72340444422.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/tedegevix.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/35742469788.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/88180056276.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/72010963793.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/92197473871.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_off00007f6a.bin
a26e17341e74e3f4ed7e068c431fde0770880713fe4b8693207b652997f39c69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6A 5460 bytes
font_01_sfnt_off000091f1.bin
ddedeb9a9cbeecd9696e1e38aa6a1e9e115d1ee0cd614739491f69537d41e975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F1 10404 bytes

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