Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ad039383f93dba…

MALICIOUS

PDF

41.7 KB Created: 2020-08-31 11:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9ccdc474ccf7cfa7651daab138fc49b SHA-1: fc3445da5f79fb76f07ca6d422de079bd6ea64e4 SHA-256: 70ad039383f93dbac4c5be2069f7f916796b87cb92c2b92311bf7a1051160642
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at ttraff.com. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to religious text.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=kuran%2525C4%2525B1+kerim+sat%2525C4%2525B1r+aras%2525C4%2525B1+renkli+kelime+kelime+t%2525C3%2525BCrk%2525C3%2525A7e+okunu%2525C5%25259Fu+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_5689eced90bd429ca9020d6800e11d52.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_71a9d932100d41408d4e45d600337772.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_6a15a83f22704ff2b433deef90e25559.pdf
    • https://static.usrfiles.com/ugd/06497e_98dc4afe06cf46e1be11a07f6e7a6610.pdf
    • https://static.usrfiles.com/ugd/e6092c_53868e51f4834ba09fe77ab493ca504d.pdf
    • https://static.usrfiles.com/ugd/5899d5_ea86a30178e94a848a9c3f83337546d1.pdf
    • https://static.usrfiles.com/ugd/756799_486ad2a73b134795a8680f52b3f164ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c92dc5782b14e0b80868bdc27535de6.pdf
    • https://static.usrfiles.com/ugd/a44510_dd4806b772624151b07b3e34ce981a87.pdf
    • https://static.usrfiles.com/ugd/0d089b_07853c3a52694500accb49b670f6939a.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd7010f44864e0495c381b9c7c8127f.pdf
    • https://static.usrfiles.com/ugd/b8c837_7910ecf8492747a98f9ddf053568d30e.pdf
    • https://static.usrfiles.com/ugd/8d57bd_dfe4f4da58854e8e8c6a8d7f0ef107f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_854d07ea873f45c381e7c44f16111951.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_ce8b2a94a1b841179c2f0c20a4d1f9cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_853327562298494eaa99db4a50b10a37.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f35.bin
eb7cb26b9a3aebb35b46e78ca1ab92c483bf36ad6c560d1dd7869685fd02d349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F35 5800 bytes
font_01_sfnt_off000071f6.bin
ec224837b3a0f322a2d7034a036a9419b6fd15957a4f213b82dfdaa5a6380ec6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 11672 bytes

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