Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89d980555712958…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 23:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b288c25bf6508daf8620d3f95b353c2f SHA-1: 09575aeeb445b5aa471833a0e76e03dda13fe9d0 SHA-256: d89d980555712958119bc2ee3feb56c88713ee39a79a9ea61694c609800e6ff9
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a tactic often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.cc/wix?keyword=descargar+diccionario+biblico+vine+pdf', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, reinforcing the attack pattern.

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.cc/wix?keyword=descargar+diccionario+biblico+vine+pdf
    • https://static.usrfiles.com/ugd/b8c837_e03fbc2826624aef8dd0d6211dca4743.pdf
    • https://static.usrfiles.com/ugd/b8c837_aaea98ca805a4118a92d760239612e5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bb157059c7d45729e053cd08b6efc47.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e2aacc39c9b4d2cb4a4ad025b9efbc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_41e7b55853824b1d8aa276587fab3c5e.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_88c09d2b16d74a978e27f2373d9223e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ceefa6617de046cab9af5e0a9b652215.pdf
    • https://static.usrfiles.com/ugd/71fd01_b78fef337126405d9437a0d1fad27351.pdf
    • https://static.usrfiles.com/ugd/b8c837_f37a4219abbf4c908fc497beee08c947.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf05ce16c7674097a1f1da5467c5178b.pdf
    • https://static.usrfiles.com/ugd/b8c837_abcf35407fab42aab17ac4e20d9a7c69.pdf
    • https://static.usrfiles.com/ugd/b50c55_181a6a83bd49458f8b775e54ddf79f56.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_off00005ad9.bin
c4a50e903c090c0d07e50d00691797ac69e0d016b54cedb92987198925a9912c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD9 5520 bytes
font_01_sfnt_off00006db1.bin
a3f04abc8b25506cc4ea6f3854669df4dc99adb56676bf9e5faf5b5875239bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 11708 bytes

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