Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef216deebee209ab…

MALICIOUS

PDF

35.6 KB Created: 2020-08-30 15:39:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eede439bb27b4d6629e3c33f3c96a2c SHA-1: fd3a38ec1aaf03c510370e56e27778af2031cf7a SHA-256: ef216deebee209abb084911983a1a2c33f5cfdaa5f56e61fd033df8f4082accc
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 redirector service. The document body text, though heavily obfuscated, contains a URL that leads to a known malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware distribution.

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.cc/wix?keyword=ccna+routing+and+switching+complete+study+guide+200-125
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/76490223602.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/mekavomatukume.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/nizusuxotiri.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/all_commands_in_unix.pdf
    • https://cdn.shopify.com/s/files/1/0435/8157/1227/files/60724323368.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/xofedama.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/pozijavi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4294/4677/files/24407138139.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/67241201115.pdf
    • https://cdn.shopify.com/s/files/1/0436/5333/3145/files/august_current_affairs_bankersadda.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/banking_and_finance_b._com_part_2_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/genuxutanaxegafedivofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/anandam_telugu_movie_free_in_utorrent.pdf
    • https://static.usrfiles.com/ugd/b8c837_55dcb8d9da9740ba95e7494f69c9a316.pdf
    • https://static.usrfiles.com/ugd/c7a620_532b07dfe9f84b49b304c46a080eb8bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_41934b2beee5442ca25610b90fd6c930.pdf
    • https://static.usrfiles.com/ugd/eda9ba_f349af12b650404bafeff13374f2775b.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_off00004a8a.bin
461c76911207df9995ddaebd22fde02804d9ac1842309a4084a65035b5d9d498		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8A 6068 bytes
font_01_sfnt_off00005f21.bin
bec7b025a66c9ea93e4fdeaee2110eb15faaee8b292a6b553af98e8ee190563b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F21 9888 bytes

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