Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6eb2e506fdc97e…

MALICIOUS

PDF

42.0 KB Created: 2020-10-31 09:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 44aa2d20a2ef1e51929889c1b6ff4ade SHA-1: ecf43e2e7bbfc74d9965a8bc1b80b8b11ebb6a6a SHA-256: 0f6eb2e506fdc97e926313372631e02d9acfdea90ad4117ea018e27fe9bdec82
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.me/123?keyword=the+world%2527s+end+movie+streaming In PDF document text
    • https://xudaxeja.weebly.com/uploads/1/3/4/3/134339900/xexuduvobupubataneza.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/zomulitonosijobalujo.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/melita.pdfIn PDF document text
    • https://fogiboxumejak.weebly.com/uploads/1/3/4/5/134518377/fozojo_komivumafi_jonaduguwa_tusinukivavogo.pdfIn PDF document text
    • https://judiwufafa.weebly.com/uploads/1/3/3/9/133999980/milivumuvux.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/5844407.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/a3795.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6901/1621/files/11202765801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4e95148-794b-4572-9b22-13fdbbd9e1df/98499725120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b99e81b-b31c-4a68-adc7-bb30de252663/79514956173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/524ac07f-f750-475c-a2a8-0fef23b2c304/complete_combustion_of_propane.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/kenunigi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/premera_blue_cross_amazon_claims_address.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/wixelixaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/502f686c-c25d-4aa9-ab23-9d89de8ae0e0/segaxoburuwokemejuripak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1488/7847/files/platon_phaidon_romana.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_off00006643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5372 bytes
SHA-256: 9d6e10c3d83861b007a0ce330b18904136f8a4921f03ff14e814a2868f2e976f
font_01_sfnt_off00007877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7877 10192 bytes
SHA-256: 207e963c91e2f4008f1904792e827ebe966a64c6f74ab48415ca5ea896d4d157

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