Malicious PDF — malware analysis report

Static analysis result for SHA-256 403f18d6ea74dfd5…

MALICIOUS

PDF

32.5 KB Created: 2020-08-29 17:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3aa34bb2522bce068d256e68084853d SHA-1: f32c596cdd2faed74d6a42892a67fee39cd5cd91 SHA-256: 403f18d6ea74dfd5318af7771ed19015f4eb3a0ed4260505c58aac963f976abc
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, 'https://ttraff.cc/wix?keyword=mcgraw+hill+language+arts+grade+4', is directly associated with malicious redirector infrastructure. The document body, though heavily obfuscated, appears to reference educational content ('mcgraw hill language arts grade 4') to disguise the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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=mcgraw+hill+language+arts+grade+4
    • https://static.usrfiles.com/ugd/b8c837_15216b0e15844e7fbff76eea20b523a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a39c6296bda4a19bf40b2d4a636c05f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4148a22767949aba5674d5d8efd6834.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_f44b322bcaf34d3199fc7e42ee16aef0.pdf
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/point_click_care_training_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/38072018170.pdf
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/25580427630.pdf
    • https://cdn.shopify.com/s/files/1/0460/3405/9428/files/kenomujakaguxo.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_off00004146.bin
072704e628da4c8cc6238b7cfc2808e4b63842375a15ddd1d5d6bb3410dbd467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4146 5388 bytes
font_01_sfnt_off000053aa.bin
abb1a1cbd1bd7e5700ecc23bd852ba0f870a62ed88e64d65df4c038908fbeef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53AA 9996 bytes

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