Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c525678cd6ec014…

MALICIOUS

PDF

39.5 KB Created: 2020-09-07 01:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62d6e4ed3656025c1cd6c2c935ccbae0 SHA-1: f83c846745860eee3d3765f6fe183014f3a37bb9 SHA-256: 1c525678cd6ec01401f404eb7fbd303053d112b9d1e7e186431d52ac3b550f1b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/wix?keyword=analgesik+adalah+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary intent is to lure the user to malicious content.

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=analgesik+adalah+pdf
    • https://static.usrfiles.com/ugd/7ba596_368f942010334fea8def9911fa27247c.pdf
    • https://static.usrfiles.com/ugd/8b97dd_95749051d5d64507b220980a4f7827a9.pdf
    • https://static.usrfiles.com/ugd/113e89_9a27c975c92b41098a59e87b3425cd02.pdf
    • https://static.usrfiles.com/ugd/bb10c5_88c079c56c444195854a90a3f3b57440.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_a0a804db228341cb90e24a2b1fa72a21.pdf
    • https://static.usrfiles.com/ugd/cb4a18_a3908279840c4c09a00208d8ee754850.pdf
    • https://static.usrfiles.com/ugd/cb2bed_5c7d1bafc1d54686956d0ef6fa8900c8.pdf
    • https://static.usrfiles.com/ugd/808d8c_4d49525de6aa49e692b05b5b34bc8603.pdf
    • https://static.usrfiles.com/ugd/c33cdb_ff009c0b8d084922ae8174117111f81f.pdf
    • https://static.usrfiles.com/ugd/90423f_338ca7f0f54046a6990c24a0ef7480ab.pdf
    • https://static.usrfiles.com/ugd/f8de3e_00bb30106cf840bfafe1bab82da33a02.pdf
    • https://static.usrfiles.com/ugd/e8506d_dc52ce9e00ab453a96bb5903ea69f030.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_off00005eff.bin
e1aee10e93ec9012d3e7dc6bf8dbb6488f587e770ac939a11b5b382a2f097397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 5260 bytes
font_01_sfnt_off000070e9.bin
7f409f8904509aacaf5e1bee7ff2b5bef7a380593cb4ce188fe4a9002ed4d491		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E9 9648 bytes

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