Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c5e11e520dcd9f…

MALICIOUS

PDF

49.4 KB Created: 2020-08-05 23:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88e820f804796ef97c8b657ff8b5a1c3 SHA-1: 2f61faeb94370f391d748d2e58dec05b33f6442a SHA-256: 96c5e11e520dcd9f139bbd87280149bb9524b7727bdd03613e678662368bd8b2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Breakers korean novel pdf' and the malicious URL, suggesting a lure to download potentially harmful content. The presence of multiple Shopify URLs indicates a link farm strategy to obscure the ultimate destination.

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/pify?keyword=breakers+korean+novel+pdf
    • http://vowulo.850plants.com/uploads/1/3/0/8/130813747/b519c02851b5.pdf
    • http://files.speakingintears.com/uploads/1/3/0/7/130739558/9922660.pdf
    • http://files.naokofujimoto.com/uploads/1/3/0/7/130776205/5129765.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6161/files/41859732871.pdf
    • https://cdn.shopify.com/s/files/1/0431/9287/7217/files/89632343024.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/86095988257.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/pun_in_poems.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/multi_armed_bandit.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/keviwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2653/files/32092965172.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/jivanuligusu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6237/7113/files/leverage_watch_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/0931/8813/files/dekazidovarofilafaxasakug.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/54681995077.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/modo_marbel_cheat.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_off000065ec.bin
c28568b80c4ea9f3ef6d8a0f28b2454cc7e69841bf796c63f97c7deaed2aa297		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EC 9896 bytes
font_01_sfnt_off000084a8.bin
45b8ef13e5112e2ade755c06fb5b485d64d49ffb014bcb3641d1c5ffbfccca6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A8 5208 bytes
font_02_sfnt_off00009679.bin
0040d4a0498b684cabed5b1de5a94626eeed584b35852e1dc24fc577d911a675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9679 9908 bytes

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