Malicious PDF — malware analysis report

Static analysis result for SHA-256 9299614643a28a4b…

MALICIOUS

PDF

47.4 KB Created: 2020-09-18 17:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 81cf7e3282fb2fc9d08b7a6c62a96ca5 SHA-1: 2e95200dbf36ead042a79d531611d06171af6adc SHA-256: 9299614643a28a4bd9f4ab12431b9fae3fd72e197d22eabc6f9eb69ba72a1067
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.cc/wix?keyword=technology+rocks+seriously+think In PDF document text
    • http://dugoxi.accentbottlelights.com/uploads/1/3/2/3/132303195/zelozave-zatubibavolol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6b123970-1bde-48cb-80d1-0a90420eb792.filesusr.com/ugd/46bfb0_7143e08cdaad4cadb212caa980c8f8b5.pdf?index=trueIn PDF document text
    • https://19af447b-af86-4042-9224-e05339e9e749.filesusr.com/ugd/e54fc7_d185b75fede34fdf832515e6116e7e75.pdf?index=trueIn PDF document text
    • https://27ea47e8-fd43-426c-9998-315803d6d2e7.filesusr.com/ugd/b926a8_8721bac32c4e414386c8243f418bd61b.pdf?index=trueIn PDF document text
    • https://c43a7b44-4c14-4a4f-98d1-8a8562adafb5.filesusr.com/ugd/a4c1fa_7f5e5c3535ff4344b9652725b97ddbca.pdf?index=trueIn PDF document text
    • https://ffe6caff-6118-449d-8681-beaf20fb5f64.filesusr.com/ugd/dcbeda_4485fc7882114e85a890978828d64292.pdf?index=trueIn PDF document text
    • https://f8bf5462-b568-4a74-997b-00c025ffa507.filesusr.com/ugd/9c8fb9_df276e59a72d4eb78d2bc79346ec347f.pdf?index=trueIn PDF document text
    • https://ac9b9024-b016-4c4f-a37d-b349201392b9.filesusr.com/ugd/c722c2_eea5bbbcdb29491cbb1117381b18a882.pdf?index=trueIn PDF document text
    • https://72e6b069-b731-4086-9957-97324ba38ba8.filesusr.com/ugd/724fb5_8fe0ee97247247b58c3b5c569a6ad6f1.pdf?index=trueIn PDF document text
    • https://fc77e75f-0b5e-4879-80c1-5651cf016e20.filesusr.com/ugd/fedf23_f1650e216fe242818536f8146ff14e31.pdf?index=trueIn PDF document text
    • https://e7df3330-510c-448e-8f2b-1bb7746c8156.filesusr.com/ugd/64bd79_d9c08f80972c4573b578fc7a93cca51c.pdf?index=trueIn 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_off00007289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7289 4968 bytes
SHA-256: 84869efaf00741ae2fed41c5377f6c8a8f246fd0cbecdb0712161bf39bf15b78
font_01_sfnt_off0000837b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837B 14584 bytes
SHA-256: 519050cc91837d96ea3c9e93f29c61544bdb729e432e67c9ff436592d2dc2d3c