Malicious PDF — malware analysis report

Static analysis result for SHA-256 9291b1c93614fd35…

MALICIOUS

PDF

33.0 KB Created: 2020-11-01 17:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8a10499aa4ba4dfe5eb1f7bed6a4d470 SHA-1: 88cdf4d7395ee11cb835c73da4b5dc2f1d0911b3 SHA-256: 9291b1c93614fd350f0ed9cd27a5869201ae29211a31daeca6065eaf245e0178
154 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, https://ttraff.club/123?keyword=daenerys+targaryen+wallpaper+fan+art, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure under the guise of providing fan art. The presence of numerous other PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/123?keyword=daenerys+targaryen+wallpaper+fan+art In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f947551883b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379370/normal_5f8e8fb08d87c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413007/normal_5f9e7fcb9a109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412887/normal_5f99882eebd23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/612c9dac-4613-4c7b-89ac-f657af90a857/guia_do_estudante_atualidades_revist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8041002-6da2-4b06-9ec9-40b8e6110191/9411364278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2624/3996/files/matuxopaluvazojepasitunag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/health_science_1_final_exam_review_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1354/4387/files/android_set_background_color_with_hex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a2d6d28-3a28-436a-95a3-e97a956441f6/nesegojozafapubuxitijus.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/18942242135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7749/5712/files/yamaha_road_star_warrior_1700_for_sale.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44CB 5260 bytes
SHA-256: 6bbb650a9204aaaca5edacac2e706ed7391e3371caf1aa1beb9735e588ab323d
font_01_sfnt_off000056e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E4 9416 bytes
SHA-256: fbd14dd1371a5eff7f4c831bdac56b83362a9605675ce1d44a3e39098d223582

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