Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6a23812919d8c0…

MALICIOUS

PDF

34.7 KB Created: 2020-11-02 01:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99b449203bcd3c0653baa49481fa038d SHA-1: 8a6326765ce52da7b78f151da559a2cffb012ec3 SHA-256: bb6a23812919d8c0ca9f4acc7029e564131e321a7406933dbbdd50c0e6a51fbd
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as a search result. It also functions as a link farm, directing users to numerous other PDF files hosted on Weebly and other platforms. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest an attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gettraff.ru/aws?keyword=where+to+buy+african+mango+in+stores
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdf
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/gogenalegojopug-biforulageko.pdf
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/nizukurajazido.pdf
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/4712850.pdf
    • https://pojarepuvoweru.weebly.com/uploads/1/3/3/9/133999230/897838.pdf
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f9475473fa47.pdf
    • https://rofofomigedug.weebly.com/uploads/1/3/4/4/134486696/3865186.pdf
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/8592453.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c22d2cbb-7ae1-40c0-b040-cb58edf131ba/560042120.pdf
    • https://cdn.shopify.com/s/files/1/0500/3722/7677/files/world_war_z_free_ebook.pdf
    • https://uploads.strikinglycdn.com/files/b0a994ad-46c3-4147-a433-3fff134d6e6f/gikudujanetudisagisebe.pdf
    • https://cdn.shopify.com/s/files/1/0266/9802/3086/files/prysmian_instalaes_eltricas.pdf
    • https://uploads.strikinglycdn.com/files/bce76a76-7b88-4672-9755-dc14d41c70dd/mapa_del_continente_americano_con_divisin_poltica.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ed.bin
ebd37c64b1e60d538fd585b17985eebe00a7e93219acb3fc59941e11b11b62fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66ED 5520 bytes

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