Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b966129609d2a3…

MALICIOUS

PDF

44.6 KB Created: 2020-09-02 22:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c83b95fe5d8f51d1f67fc6cd9b2aeaa SHA-1: 299d5693b3be002a4a697093cc6cca0bf1517bcf SHA-256: 88b966129609d2a386c4469fb04b03633abb0d92dc8bf33cb50973919644b5ed
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to a URL that promises a download for 'clash of clans without play store'. This indicates a social engineering lure to trick users into visiting a potentially harmful site. The document also contains a large number of embedded links, many of which point to the same domain, suggesting a link farm or SEO poisoning tactic to drive traffic to the malicious redirector.

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.club/wix?keyword=clash+of+clans++without+play+store
    • https://static.usrfiles.com/ugd/b8c837_d59cec74088c4297bda894a3449ecb75.pdf
    • https://static.usrfiles.com/ugd/a18aa6_24693b26159a4711ae39aee813ef384e.pdf
    • https://static.usrfiles.com/ugd/b8c837_08bd2b72b5354446996667fdaa216b2d.pdf
    • https://static.usrfiles.com/ugd/b91566_b3d48066aecd45288e867017f69ba3d8.pdf
    • https://static.usrfiles.com/ugd/7603ae_fd87829eb21a4a42b701dacbbcd3ac7d.pdf
    • https://static.usrfiles.com/ugd/9f69bd_4ecdc5ebe3124cfd9252247a8ee0cc7c.pdf
    • https://static.usrfiles.com/ugd/c3f59f_9d38bf803051469da2b1cd1b3964f936.pdf
    • https://static.usrfiles.com/ugd/19103d_4d5b49fd804545ee9eb0ba99c2b42680.pdf
    • https://static.usrfiles.com/ugd/6846fe_afc4cfded4264b29b1d5abe52eb56ba0.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/yes_boss_video_song_bestwap.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/80116920403.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/wofijok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fc.bin
e9c477312750b721fa2b14a5e0bed8ea00e099066720c4364b1f573e86a406d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 5200 bytes
font_01_sfnt_off000075ba.bin
fde507d3e12ec33e68adf7e75fc7402ffd28b0db1492fb6dd1e3c49ab7b9519b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BA 3120 bytes
font_02_sfnt_off0000823f.bin
cb326a146726d369bcf9968ecb43d72a6128d6c2bb489dcb31e0a556c58eac3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823F 10232 bytes

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