Malicious PDF — malware analysis report

Static analysis result for SHA-256 f483f8c13978686c…

MALICIOUS

PDF

45.2 KB Created: 2020-10-16 00:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 869d657ae00309d68a01dec83247c28a SHA-1: 76d29d91f33f7764ffe99642948eb12604a04f5e SHA-256: f483f8c13978686c79357d9887bee52af8a0ef55b27a558b4eacb5591d7eafd6
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/123?keyword=android+device+manager+windows+download In PDF document text
    • https://site-1039903.mozfiles.com/files/1039903/54692104687.pdfIn PDF document text
    • https://site-1041864.mozfiles.com/files/1041864/3913398354.pdfIn PDF document text
    • https://site-1041939.mozfiles.com/files/1041939/57300350780.pdfIn PDF document text
    • https://site-1038992.mozfiles.com/files/1038992/89809683469.pdfIn PDF document text
    • https://site-1038337.mozfiles.com/files/1038337/risafuregof.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/45515066601.pdfIn PDF document text
    • https://site-1038453.mozfiles.com/files/1038453/wajomubagisaloluxar.pdfIn PDF document text
    • https://site-1039330.mozfiles.com/files/1039330/dixironubeja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_5f88b9e664539.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8703e43864c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372355/normal_5f88b8c7ead3d.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/0c233f6c23e4e.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/rowebenebuxuk.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/91e26.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/buwema.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/sidobojugonuxexoz.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/0500cafe-c493-4fdd-b95f-2bd99b81203b/37232098941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/445b783c-953c-4b98-bd30-8a9ff49d469e/xigonumipaguzosafomajeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/491c4f36-231d-4a9d-8319-5f60ebfbb43c/xurenuxokoxexidunun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8081a5f8-d753-4fdc-b5cf-71c0a7b6d8bd/jexodavimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6420e0e3-d26a-4107-9768-9aeeb3109aa3/nipupumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31466f76-2e92-4de6-bd3f-e9526cf23421/wetedelomikasabigugomuvol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5594cea-a156-457c-bb64-7d13d617edd1/95978360467.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 5400 bytes
SHA-256: 802b2bdd4183f44120ac10e3eecbf16a2e4fcf2a33b9fd5785e65c754b444168
font_01_sfnt_off000083c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C5 10180 bytes
SHA-256: 0c84bec114b9abec587f9f6cc2593a75e53594708d9aa1c26f7efa338c5aef5e

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