Malicious PDF — malware analysis report

Static analysis result for SHA-256 38799dd3bea5ba71…

MALICIOUS

PDF

52.5 KB Created: 2020-08-30 17:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 416c0c0ec10324de780f39e1700885a4 SHA-1: 4cade6e2d4960be60d6ee18b584dc530f2d04e94 SHA-256: 38799dd3bea5ba7185c1baad02a19aedf04ebf00e10ff9eb6cfae3398bead02d
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=cross+church+carlinville+il'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'static.usrfiles.com'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to encourage user interaction with these links. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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.cc/wix?keyword=cross+church+carlinville+il
    • https://static.usrfiles.com/ugd/f46427_9480593f26c64a97afae4739745ef0c5.pdf
    • https://static.usrfiles.com/ugd/822ecd_8e925787845e4a319b71e734c3051254.pdf
    • https://static.usrfiles.com/ugd/f96b02_6603da1588254e0d9ef9d0e30a1d1ecc.pdf
    • https://static.usrfiles.com/ugd/9cb927_6e59e659cf444cf6b03a716b0463be27.pdf
    • https://static.usrfiles.com/ugd/b8c837_86b3e735cce247c796b4d063db64c3de.pdf
    • https://static.usrfiles.com/ugd/b8c837_1aa57594e02e441ea95b5da593fdcb4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d29c27e147c94f83a57bab91cceceba3.pdf
    • https://static.usrfiles.com/ugd/b8c837_02fdf7ef2b034ecda35f0a51f9c8da88.pdf
    • https://static.usrfiles.com/ugd/ae15ca_e126f3070c23441fbb13a1e3901f611b.pdf
    • https://static.usrfiles.com/ugd/f14cf6_f36cd54442a94048ae86d95ae4938b75.pdf
    • https://static.usrfiles.com/ugd/b8c837_715346d638d14508a09eaaf21faff564.pdf
    • https://static.usrfiles.com/ugd/b8c837_07840ca1bf734c56adf1ec0a5d14d843.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b94b05d034940d8877c2d6facf28444.pdf
    • https://static.usrfiles.com/ugd/74a852_f0c3057eb1064b73a005b879f5361838.pdf
    • https://static.usrfiles.com/ugd/7d21c0_4fd85d303e5d485297c0d804fec33226.pdf
    • https://static.usrfiles.com/ugd/b8c837_7bddbc0c184c4f569ac293a086fe92a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b67014d539ea4db3bcd7b30ca35ce6ec.pdf
    • https://static.usrfiles.com/ugd/72216b_ecddd486384b4340a02e39e677d9e119.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_off0000792c.bin
7b9007ffb43807d1c4237e10b93806b0359aaac71868af3ef95cf8be735e5ea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x792C 4852 bytes
font_01_sfnt_off000089a5.bin
25b34d6f4ca1e777523379a96461ba781a421c68270fa9ebd9c1efe6c3b5bdda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A5 11276 bytes
font_02_sfnt_off0000aebe.bin
440b159d14de00d868b99d07762b2ca59c30c403935a56db5d29518140bfea0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBE 16304 bytes

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