Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1235a3f0552cc55…

MALICIOUS

PDF

43.4 KB Created: 2020-08-30 05:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f6f70ab2809419d63adc6087aeb387d SHA-1: 06b70d8d70f0f3b4d6ddfa2d30c9f520b3d7c2c5 SHA-256: e1235a3f0552cc555b19cb083b04f69d66f7436be171f32d5c5deb4c77446249
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=pokemon+fusion+generation+2+rom+down', which is flagged as a malicious redirector. The PDF also hosts a large number of external links, many pointing to 'static.usrfiles.com', suggesting a link farm used for SEO poisoning or distributing further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/wix?keyword=pokemon+fusion+generation+2+rom+down
    • https://static.usrfiles.com/ugd/99a8f2_ed4c92f427324a9f9998bf1e4d8217a1.pdf
    • https://static.usrfiles.com/ugd/b13fd1_61397ac3ad9e415783a8544267a6caf2.pdf
    • https://static.usrfiles.com/ugd/0f5b72_4387f8c8d9d846009c04370bb5cdfef3.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/96911824427.pdf
    • https://cdn.shopify.com/s/files/1/0444/7030/4935/files/git_undo_local_changes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/nenukiwiw.pdf
    • https://static.usrfiles.com/ugd/b8c837_681d5d5fb3eb4682a5c791d1f1f60db0.pdf
    • https://static.usrfiles.com/ugd/b8c837_42f546c2cd7845dba95f46381acebb02.pdf
    • https://static.usrfiles.com/ugd/9219f8_2e370e8372964f5692dfbc7f017102cc.pdf
    • https://static.usrfiles.com/ugd/8b49c6_3064d38aa36b4409ab866298e99f3f14.pdf
    • https://static.usrfiles.com/ugd/b8c837_062531f5b7a641fdaaa0b3fccb86bb02.pdf
    • https://static.usrfiles.com/ugd/07e02c_5ae8c2d727cd4920b182dda039a9f0fa.pdf
    • https://static.usrfiles.com/ugd/271e65_d87c2677b2ae4f96aef066ecb4cc113b.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_off00005f41.bin
a347c58948b5ad0d16f281e113add7940fda731f2c344399dafb879963c1494b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 5484 bytes
font_01_sfnt_off000071e8.bin
9185b2ebf8149c28161157b92a85597cd3b10a3cae5c9b6aaff14b57ca00f32d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E8 15064 bytes

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