Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bb28e1fd58a158…

MALICIOUS

PDF

46.3 KB Created: 2020-11-06 11:22:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c392bd33e8754e2783405a7e0ddba979 SHA-1: 5df9c501e477bb915293426297f2bfa8af651d34 SHA-256: d0bb28e1fd58a1581d8c72a2956e22155a42383cd819bbbb3d196d4a530660f5
106 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=vpn+for+android+apk PDF link annotation
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/buzenotajifop-powopido-xozofadov.pdfIn PDF document text
    • https://rosaguvedofim.weebly.com/uploads/1/3/4/3/134352906/nanil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421042/normal_5fa332e2ae1f4.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/panabesifevas.pdfIn PDF document text
    • https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/16acd3e35.pdfIn PDF document text
    • https://baxojozejaxofo.weebly.com/uploads/1/3/4/5/134586757/rupevasug.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/e085d89a2.pdfIn PDF document text
    • https://xorusisu.weebly.com/uploads/1/3/4/3/134314808/3eee1256acafd53.pdfIn PDF document text
    • https://jamisovuropasag.weebly.com/uploads/1/3/4/3/134396730/8908489.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/9f28e3dd0b98e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_5f8e78e788cbc.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/kisimujuk/public_relation_file_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/sir_walter_herbert.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/amoeba_sisters_photosynthesis_and_cellular_respiration_comparison_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/fivodimetatuko.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/canada_food_guide_2007.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 4856 bytes
SHA-256: 5f59d806cbe9893862f83046192df5864ef396d35a870f9cf91e2d436f2bf3b1
font_01_sfnt_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 11104 bytes
SHA-256: 5b9f4238f6dfcd0a7424cbd679af70a1f764f8598dcbaef7b9ae6619b79644e0
font_02_sfnt_off0000976b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x976B 16140 bytes
SHA-256: 1ffca1ef16be5e2ec436e77f9211a88ad3199dc781cb76600401cc2e2c7dce6d

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