Malicious PDF — malware analysis report

Static analysis result for SHA-256 323b06abead74c36…

MALICIOUS

PDF

42.3 KB Created: 2020-09-16 14:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0241f20c7765bd7ce3d9f8e5424bfed7 SHA-1: 2c64f96bfb3023581405f33be98a003bc59ca92d SHA-256: 323b06abead74c360bace3e497ee5fdae39099bd2939c7d35bd6b9d14279353d
150 Risk Score

Malware Insights

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

The PDF file contains a prominent link disguised as a lure for game cheats, which redirects to a malicious domain. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, suggesting a broader campaign to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=sims+freeplay+cheats+android+unlimited+money+apk+iphone
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/29943985155.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/chamakam_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/fikepuxaguxinefukuzebul.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8480/files/65725919304.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/ketodewik.pdf
    • https://cdn.shopify.com/s/files/1/0458/0166/8774/files/whatsapp_plus_2019_free.pdf
    • https://cdn.shopify.com/s/files/1/0460/1869/1239/files/takeregerusop.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/avatar_movie_300mb_dual_audio.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/8365273231.pdf
    • https://cdn.shopify.com/s/files/1/0479/2647/6964/files/ranajoguzax.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/pan_flute_sheet_music_free.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_off000065a0.bin
13d571affc75ea2a5818af36efb6ad4eaed185b30cdf9d62c7daf0d19d970272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 5664 bytes
font_01_sfnt_off000078be.bin
01215c057c69415c5cf6455f84c6d56aac13a2cf4083eb74352a2391f277e30d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BE 10420 bytes

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