Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acb069b31a94ea8…

MALICIOUS

PDF

42.7 KB Created: 2020-09-30 07:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 232228495e924d09050c2dfce6f15beb SHA-1: a00eb0acd41e35f3ab35895f6d2ba047075a0f3a SHA-256: 2acb069b31a94ea8ebf92c5111abfcb63f03fbb5d7fbb657f46a6eff60df86df
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://cctraff.ru/strik?keyword=walls+manual+of+emergency+airway+management+pdf In PDF document text
    • http://taxekega.poppyseedwindchimes.com/uploads/1/3/1/4/131407005/8053497.pdfIn PDF document text
    • http://files.studiogroovefitness.com/uploads/1/3/1/3/131398286/tiponikavibil.pdfIn PDF document text
    • http://files.sharingthecarecampaign.com/uploads/1/3/2/3/132303359/2245041.pdfIn PDF document text
    • http://files.paintingpeeps.com/uploads/1/3/2/6/132682535/31fa1eec1.pdfIn PDF document text
    • http://files.agelesstalent.com/uploads/1/3/1/6/131606069/tixaluli.pdfIn PDF document text
    • http://files.ftrs.ca/uploads/1/3/1/0/131070009/nuduniwugubibusa.pdfIn PDF document text
    • http://sedika.dancefixx.com/uploads/1/3/0/8/130873782/dudobotefukukutirin.pdfIn PDF document text
    • http://novewaxu.chsadc.org/uploads/1/3/1/4/131409098/5ffdefa.pdfIn PDF document text
    • http://files.jewelsofourdestiny.com/uploads/1/3/2/7/132740619/f34cd.pdfIn PDF document text
    • https://site-1036932.mozfiles.com/files/1036932/95810486763.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/lebebulelibubate.pdfIn PDF document text
    • https://site-1037069.mozfiles.com/files/1037069/14066583882.pdfIn PDF document text
    • https://site-1036694.mozfiles.com/files/1036694/19334228843.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/1/0435/3110/8503/files/logetufogimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3705/6415/files/fuduxevufabutogumoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3532/8417/files/57269746042.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_off00006702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6702 5684 bytes
SHA-256: 8effd0ce1a69d174474f2eed33159d238b19b27038d630974469ea0d39113b8b
font_01_sfnt_off00007a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A69 10272 bytes
SHA-256: 65a958af20a163ac641a2ae72b0cd0441609745bce670ae8f11e97cc47eb41c4

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