Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7a6a7505ac6360…

MALICIOUS

PDF

36.3 KB Created: 2020-11-09 10:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: be377545ab6fe80dee06cc99f507241b SHA-1: 8017ba73a319c495c439c0238af2c7ee08e21382 SHA-256: fe7a6a7505ac6360e7faaef28c740f45806f8c6267e9242ec5d89d2dda4494d0
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/wb?keyword=minecraft%20palace%20network%20resource%20pack In PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/kerasexox.pdfIn PDF document text
    • https://nafizanoride.weebly.com/uploads/1/3/4/5/134596231/japunifobufupebip.pdfIn PDF document text
    • https://lobakazuperowe.weebly.com/uploads/1/3/4/3/134352895/7945091.pdfIn PDF document text
    • https://lezivefa.weebly.com/uploads/1/3/4/4/134458465/tatulijalevever.pdfIn PDF document text
    • https://pidivupam.weebly.com/uploads/1/3/4/3/134327465/e6e184068c58.pdfIn PDF document text
    • https://kufofena.weebly.com/uploads/1/3/4/5/134504524/sowag-xujir-nekituseroko.pdfIn PDF document text
    • https://dinelelulom.weebly.com/uploads/1/3/4/3/134308509/899920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/difference_between_univariate_bivariate_and_multivariate_analysis.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/43903822439.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/84742539687.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/rental_agreement_example.pdfIn PDF document text
    • https://goresab.files.wordpress.com/2020/11/tawubide.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/22076054656.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_off0000482a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x482A 5168 bytes
SHA-256: e48b742b5764a49d83841e91bf4c91c794d13c61fdd917881b74e1e867d3d439
font_01_sfnt_off000059f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F1 13268 bytes
SHA-256: 82361c2f31540168d4156528dffa4e46e3c0cf94c489b8e35e103904b94bb648