Malicious PDF — malware analysis report

Static analysis result for SHA-256 89fd90990ad825d0…

MALICIOUS

PDF

50.5 KB Created: 2020-10-02 18:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 80396d7467563311b22680425a896a67 SHA-1: 32ae47ac9aca1084bb02ab6d269e5c22bb621705 SHA-256: 89fd90990ad825d0b2d8a9ffdd28132474879ae46af7bd964897f97ac6f4fb10
124 Risk Score

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 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://gettraff.ru/strik?keyword=let+it+be+piano+chords+sheet+music+pdf In PDF document text
    • http://welam.infccla.org/uploads/1/3/1/4/131454029/kodupunuz.pdfIn PDF document text
    • http://files.renew-wellness-center.com/uploads/1/3/0/7/130776452/fuzaduxudiv.pdfIn PDF document text
    • http://menudiwep.sophalawyer.com/uploads/1/3/1/4/131437229/01b3bfddd.pdfIn PDF document text
    • http://files.rocksteel.co.za/uploads/1/3/1/6/131637194/edc4fac0c67760.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/nawal.pdfIn PDF document text
    • https://site-1039319.mozfiles.com/files/1039319/85927754979.pdfIn PDF document text
    • https://site-1039707.mozfiles.com/files/1039707/wajuwotifi.pdfIn PDF document text
    • https://site-1040097.mozfiles.com/files/1040097/mimotasorozowefebofegupo.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/2968100601.pdfIn PDF document text
    • https://site-1037840.mozfiles.com/files/1037840/zotademovanejepenedi.pdfIn PDF document text
    • https://site-1039328.mozfiles.com/files/1039328/nofiresinegam.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/c319683f-8ed2-421f-891d-6e3e7b8b6a6b/34434669687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055b1866-02ed-49b2-9d38-4f340bda4278/xeriweluwijakiwelase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac164d45-1680-44c1-b866-34c5100d2d06/paker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef7189d-2033-4a39-b0d5-413be655f36f/95763729913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dadd4b0-6154-4505-815a-beb4c5142ef0/40222983825.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 5444 bytes
SHA-256: 263b1f47ba87bcd5bca6f70ad803b90ca634f621ccfd2201182e57fe657eb7e8
font_01_sfnt_off00007b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B47 14172 bytes
SHA-256: 0a3b70eaaa471a2a0ff48b6e881072c546d31627492114da7e9f50f8cf7b52f1
font_02_sfnt_off0000a79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA79D 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832

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