Malicious PDF — malware analysis report

Static analysis result for SHA-256 2880e9266a858981…

MALICIOUS

PDF

42.9 KB Created: 2020-09-06 18:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0d5dbb6a3bedc9549dcd6dd8dc2c2f46 SHA-1: b3ceb8e88b1ca070364d08a7147ca405f5443069 SHA-256: 2880e9266a85898134a48b1ae8f9b90ada37945e8ae95736b52f39b9fb8e1575
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=beyblade+burst+mod+apk+new+version In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9e56b2ce15c044e99ac8fe15d1b72301.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1c462_bda0ad071310478e8dc32d2b8c93693b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca09c_26327048c6854b80a0cd9b4dd09bc0d8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1e32c2_c7018cf34f4441b7b3253685fb958cac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ec0012_69b137528434419c887bf32142babf03.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_48dc53febf4446e7a5fe830090f0ea75.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/21408542524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5070/9671/files/18219363128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/gelosilumadunutesakozezo.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/05e3ad_35fe82e2909543fba822d81329f63cc3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/764aaa_12d2ae2aceec4699802c73a432078d82.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b41a9a_bf9be61f17384c4fa627e3d63efa094f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5befcb_c99d2b0d99554530b587549db40fbe58.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/87fdc7_32ff5d16ec1a4de9aa05c72eb221775f.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 5492 bytes
SHA-256: 9fd100ace1a9cea839c11ec9524a5a98fe8cd6f952e7a0f2de1b51fa41fb9867
font_01_sfnt_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 10908 bytes
SHA-256: 3b40f682f90bbfec80c861159bf2ebdb23bd42d626b6f1e51d23057d882bc1e0
font_02_sfnt_off000099e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2