Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb5ac457e48ff58…

MALICIOUS

PDF

168.7 KB Created: 2020-10-24 18:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 93eef042d427800d19e4ff66bd65d98a SHA-1: bfa7f31e8af105a77d55a608e6ffe7094cebfbbb SHA-256: 8fb5ac457e48ff5892c6d09ce46baa6501c57f941fe7277770b4287c33a86160
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL `https://ttraff.me/aws?keyword=indian+geography+in+gujarati+language+pdf` is the primary indicator of malicious intent. While no scripts were extracted, the presence of a malicious redirector strongly suggests this document is part of a phishing or malware distribution campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • 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.me/aws?keyword=indian+geography+in+gujarati+language+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391335/normal_5f8ff414cd04c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_5f8f3e11568e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385202/normal_5f919c5693a57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f9243e82f3cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_5f91108b3ab31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f86f8de93ebc.pdfIn PDF document text
    • https://giximelet.weebly.com/uploads/1/3/4/2/134234701/480213.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/faxebedabowexop.pdfIn PDF document text
    • https://xigokerurubupa.weebly.com/uploads/1/3/4/3/134312623/jokexuf.pdfIn PDF document text
    • https://totapige.weebly.com/uploads/1/3/1/4/131483287/sekesep_munolemizig.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/kulow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5042/1410/files/dojudov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8705/7062/files/einstein_brownian_motion_derivation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/48015600575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5364/0608/files/pistons_seating_chart_palace_auburn_hills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0778/1281/files/93957317690.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d913ad8d-ccaa-4c24-b748-4c49725a6371/46896409790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baa2ac2d-30a9-4db6-b45b-056051a830f9/sujinufamuduzisijirolulov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0d7b68-e4e6-46e1-8da2-90c7fdbc8bef/konoladogubotumiruxomogat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d47103-224a-474f-83a2-f60491c33012/69956133938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8713128-2e8e-4cc0-8e6f-1d3686ebeb54/27052165107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b9f7844-8d47-433e-b8a4-26f3815f3710/remozabuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7bc2e76-c2c8-4e11-ac74-45dd10449abd/56896460028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fad4afb-553e-4dff-94b7-93d6be394f24/badusurozaluzun.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000227b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x227B6 5240 bytes
SHA-256: 4f4807de3925d6128170856fa89d12612c719c9a99497f08ed41bde3a55b0939
font_01_sfnt_off00023993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23993 5208 bytes
SHA-256: b8bf4340e45324f7f8c93ff2b0a2320e7b354b982a88b22c9dd9adec07520256
font_02_sfnt_off00024a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24A6A 16052 bytes
SHA-256: c5ea73e7c6db9a01fb86de8b85ac9c78b3e788d85f7665fea3ed4071c184bf3b
font_03_sfnt_off00027c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27C75 16552 bytes
SHA-256: af37143214c7a0233617c6deac6cd66a3cc92df74a837c31c93b146991fe11cd