Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ddd83bd4a29f0d…

MALICIOUS

PDF

79.7 KB Created: 2020-09-08 07:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08fc32e0441933d6def5c9220ac11db1 SHA-1: 14c4ad8ae850535ec880aa920ab91d5ebcfa68cf SHA-256: 66ddd83bd4a29f0d457257405039553c0d0fc52ae0e31121ff7a59f5f4bd1679
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. The document body, though heavily obfuscated, contains text suggesting it is a lure for sheet music, which is then followed by the malicious URL. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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=hands+up+ottawan+sheet+music
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/weremogirosufadazopedigul.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/kuzokalabogolibekok.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/64318468271.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/bitlord_1._1_for_xp.pdf
    • https://cdn.shopify.com/s/files/1/0438/9715/9832/files/talabejuzowovuredipokikoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/8906774107.pdf
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/tomaxum.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/newowapaba.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca6.bin
fa6fc7e6ba853370f3c4d109fa52ecd49a056a1142f5291425daafd248e26bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA6 5240 bytes
font_01_sfnt_off0000ee66.bin
2c7d859de40cf7b6b1b03c9ab5f65257f6f3e94549115616ea97e8810845ba30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE66 14916 bytes
font_02_sfnt_off00011cba.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBA 16164 bytes

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