Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fd8c081182c62f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-30 11:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5950129098c1303d1aa7fab5e1a0f240 SHA-1: c2ad0feedf5c6b22f297e70c8fef2bd64d85b61b SHA-256: 26fd8c081182c62f80246482faa59374b7fd6801de6a0864ae439f6aa07b2cbd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common technique for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.ru/wix?keyword=arkham+knight+dlc+skin', is flagged as malicious, indicating a likely attempt to redirect the user to a harmful destination. The document body, though heavily obfuscated, contains references to 'Arkham knight dlc skin', suggesting a lure to entice clicks.

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.ru/wix?keyword=arkham+knight+dlc+skin
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/certeza_juridica.pdf
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/49055698834.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/59398597330.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/fool_in_the_rain_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/22721382323.pdf
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/23103831361.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/27670557113.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5770/files/43862644309.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9429/files/50568655744.pdf
    • https://static.usrfiles.com/ugd/63022f_22524a0793b14403a7bb2a69b67f6b81.pdf
    • https://static.usrfiles.com/ugd/7dd30d_7d967831ff474063a0b031b5e32a233d.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_off00006cdc.bin
de7750fc6577056890c122b0d092cac280fc66ed953eb2a4f2348681a093535c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDC 5408 bytes
font_01_sfnt_off00007f0f.bin
7531256d83249366b3bd319a7c1194f2965af5d5408736aea5315f073b80503c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0F 10464 bytes

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