Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15a6b118b6e5c57…

MALICIOUS

PDF

124.5 KB Created: 2020-07-23 12:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8112a69ce0611bb6c5fec288f9350a57 SHA-1: 54d10770bc9cddf0d77011cc3c0152ec13b010f5 SHA-256: c15a6b118b6e5c57205bac5b35d99281b40c2bba2febbcb945618fc73b85f06b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.com, which is used in conjunction with a lure related to the 'Arsenal invincibles team sheet'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs for SEO spam or phishing.

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=arsenal+invincibles+team+sheet
    • http://files.drcamcreates.com/uploads/1/3/1/6/131606169/9705368.pdf
    • http://files.fultonchurchofgodinchrist.com/uploads/1/3/2/3/132302764/4068285.pdf
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.co-oplink.net/uploads/1/3/0/7/130776022/6f55d1c6437babc.pdf
    • https://cdn.shopify.com/s/files/1/0431/7691/9194/files/93142717663.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/47871025057.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/vexixatijokotovofesokobid.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/71294384582.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/wufidetu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/bagaripekefuje.pdf
    • https://cdn.shopify.com/s/files/1/0441/3263/0680/files/kemola.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/27052587498.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/96669300906.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/99474017006.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/ramusanuzidetovumevinone.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_off0001a2fa.bin
1fd02df9e5ca40aa1c1dc14e363a6df05b768bd3485d195446ec822021485bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2FA 4908 bytes
font_01_sfnt_off0001b36c.bin
b3e778b4848d51c7fab0d6f0c90cf15e3ab1a558ce1d38d0e187b951b28c52a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B36C 16140 bytes

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