Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b74fff2a1b81f7…

MALICIOUS

PDF

37.4 KB Created: 2020-08-31 12:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b07524e2a2073e8ec91b86b1a706c4a1 SHA-1: 88c0f03c35a5a59c8991b7cc166914404687ab49 SHA-256: c2b74fff2a1b81f75ee45b5f796d74db563e9c6a81f27077227a4738245c44df
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to potentially malicious content, disguised as a game download. The primary malicious URL identified is https://ttraff.me/wix?keyword=crysis+3+t%25C3%25BCrk%25C3%25A7e+yama+indir. The document body and embedded links support the conclusion that this is a lure to a malicious site.

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.me/wix?keyword=crysis+3+t%25C3%25BCrk%25C3%25A7e+yama+indir
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/22851318024.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/40594263846.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5671/files/80830656645.pdf
    • https://static.usrfiles.com/ugd/804ff6_6f1e588f376849fb9ce7b6df3bee45d7.pdf
    • https://static.usrfiles.com/ugd/eaf48f_f2fbf9cd1273472690a14f14aa760e9a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e91a634fb4d42afa64c2b9967012a9c.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/zokazuvivosobexenoso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/xinoluxomagufokigaside.pdf
    • https://cdn.shopify.com/s/files/1/0440/6493/1992/files/seed_chucky_full_movie_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_eba3cd7fd6c44106ae5d54473a7f1fae.pdf
    • https://static.usrfiles.com/ugd/d01287_8538e00dd2884d16a1df07ce4568da0c.pdf
    • https://static.usrfiles.com/ugd/f09a9d_88a339088b2545be959325c060a4abef.pdf
    • https://static.usrfiles.com/ugd/b8c837_acfffb4ccc3644329500c1ea517f5368.pdf
    • https://static.usrfiles.com/ugd/565485_ac2a2067dfe74be797bca960e8112223.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_off00004453.bin
7425951ea1a009bacd208991c838ec645ae895bedf5385d76e2d8846d17ea012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4453 5272 bytes
font_01_sfnt_off00005625.bin
f0ac2692b5d98c5c600f71891cede9bd54d0b12d7fa4aeb782cfb375456ca582		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5625 11180 bytes
font_02_sfnt_off000078a5.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A5 4324 bytes

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