Malicious PDF — malware analysis report

Static analysis result for SHA-256 622c7ecd7090ba6f…

MALICIOUS

PDF

43.1 KB Created: 2020-08-30 13:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e8d6bdad5d429467e02c150035adb30 SHA-1: c47f280cbe9cbb679b3f66ab49518b315c169bc3 SHA-256: 622c7ecd7090ba6f7c1e1cbb3284d4da27b44535fe2877d654489eac9c0e5136
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, forming a link farm, and one of these links points to known malicious redirector infrastructure. The document body text, though heavily corrupted, contains a search query for 'all i want for christmas is you mp3 free download' and the malicious URL, suggesting a lure for users seeking free downloads. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing numerous external links.

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.cc/wix?keyword=all+i+want+for+christmas+is+you+mp3+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9e53d4_90a085332f3d43ee9215e3fd44de687e.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_fdee29277b464bbeb09e3e1d6180fce6.pdf
    • https://static.usrfiles.com/ugd/ab059d_15fabeeeb9b04be1ad21800c9464ba2d.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_741e4ef8180f43b08cce0fe89c521e9e.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/ligetinav.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/tufabumemos.pdf
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/86046875456.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/55069320639.pdf
    • https://static.usrfiles.com/ugd/b8c837_6109d0da593947988d5a3197125eb307.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb7f060441164ca9858ec059cf7d9dba.pdf
    • https://static.usrfiles.com/ugd/238140_7b8b5dfe3fd043e795d07bc54833d058.pdf
    • https://static.usrfiles.com/ugd/b8c837_10bca9d9d0894c129ce710a420a18eaa.pdf
    • https://static.usrfiles.com/ugd/b8c837_759fa00d1b73406ab04d855dd876ea7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b05a0a6ff51488e9516e0d1cbbee83e.pdf
    • https://static.usrfiles.com/ugd/19ce5d_0e17df1047b843c0aab1b2f683ac79c8.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_off000067a0.bin
47cdff95b66fc5c24a44b256c4c56abeb9d1a28fb519e6df544f00ffae184b9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A0 5740 bytes
font_01_sfnt_off00007b13.bin
1a8856a633ec308090cc07732c138a8f60ae808152bba885f6bbb5a643fe2fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B13 10584 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.