Malicious PDF — malware analysis report

Static analysis result for SHA-256 99c9b389c559a058…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 03:20:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dbfb9f6fcbbf5b6cfbc8b684999af51 SHA-1: 6e5fd71ea04c911389033df3e6f376350a56ae16 SHA-256: 99c9b389c559a058157890825743aee128f136388ee67da1daf2cda989ec9906
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high density of external links, many pointing to shopify.com and static.usrfiles.com, but one critical link directs to 'ttraff.cc', a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Chinese restaurant menu card pdf' and the malicious URL, suggesting a lure to a malicious site. The presence of numerous PDF links and a malicious redirector indicates a likely attempt to drive traffic to malicious infrastructure.

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=chinese+restaurant+menu+card+pdf
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/40814101316.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/rabifatovatijokuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/nadisapodapalojorukemiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/lojer.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/95914567970.pdf
    • https://static.usrfiles.com/ugd/913720_42e894f1c7b14bc09fef0fd3054643e2.pdf
    • https://static.usrfiles.com/ugd/3bca44_403e7f5b530749d4bfb5f2cf58bb13b5.pdf
    • https://static.usrfiles.com/ugd/7dd30d_dabd66922d0c49ccad77dc93d7c0bb30.pdf
    • https://static.usrfiles.com/ugd/b8c837_98b8e68f9a124837b2e32dd7f6625552.pdf
    • https://static.usrfiles.com/ugd/b8c837_c39080e78f604e91ad39f0e2cb8067e0.pdf
    • https://static.usrfiles.com/ugd/de3d83_8859f9bc660345f5b2095e06f4877422.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_off00005d02.bin
abeb2c1936f66ba49c755168c60225416967ecc7e52396953d4059c39edea198		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D02 5268 bytes
font_01_sfnt_off00006eb5.bin
889e877ddded4feeec7c93715e635e86eaefa01b24a2d0623b642aa3dda64f81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB5 10120 bytes

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