Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1dbf0735a7c8b5…

MALICIOUS

PDF

35.1 KB Created: 2020-08-31 02:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81d93cfeb38f8f138c7cdcacb1a7e817 SHA-1: 5f4342dab554d30f56a9203154be4a34d3ee5e4a SHA-256: ee1dbf0735a7c8b5b90ef461f9b71271e66b828d1044aada40391ca9194eb8bf
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=citadel+change+machine', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=citadel+change+machine
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/beyond_diet_program_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/58846045552.pdf
    • https://cdn.shopify.com/s/files/1/0430/4502/7993/files/kifikagitox.pdf
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/susepuvozatenasulawobeb.pdf
    • https://static.usrfiles.com/ugd/6da380_ee02b91663f0412880bd6e6921aed456.pdf
    • https://static.usrfiles.com/ugd/b8c837_caba378897434a4e9a4c7be3dabc2fbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec8ef60b44c341b2a05d58401a74afcf.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_ebbc868fc3754a0996898152009363f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e866402209b4a83b948a68f0bf0a07d.pdf
    • https://static.usrfiles.com/ugd/d01287_a5368b48884f4b01b5d39e1a1bffdc89.pdf
    • https://static.usrfiles.com/ugd/0047a4_c769441f1525466486051b92f1a8d568.pdf
    • https://static.usrfiles.com/ugd/158fb9_aecaecf2d0834c018bdd3fb7f31828e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fd6fd250e344899e16bdf1cfbd0b62.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_off00004c46.bin
90f68aa776893500d2a990a5c66ae876b0c5a26296e0ef6c3529f85575e62800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C46 4984 bytes
font_01_sfnt_off00005d0d.bin
b486ca5211f993d6a7dfe7ff0855db95dc1e79aa5fa9587409cfa3a41f38bb59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 10260 bytes

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