Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c38c662dc49790d…

MALICIOUS

PDF

43.1 KB Created: 2020-11-08 12:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8885a3e747a78317cb98d02fc3a325c1 SHA-1: 909e5eac45c40e4ed0289029943bfc6196ea4f0f SHA-256: 2c38c662dc49790d87d5b169dac954886f6966db53f77e82c079ec44ad46dc1a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document employs social engineering tactics, impersonating a cloud document service to trick users into installing browser updates or extensions. It contains numerous embedded links, with a primary redirector identified at https://cctraff.ru/aws?keyword=uhd+movies+google+drive, which is flagged as malicious. The document's structure and link farm characteristics suggest it's designed to lead users to potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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/aws?keyword=uhd+movies+google+drive In PDF document text
    • https://botomaluxezevip.weebly.com/uploads/1/3/4/3/134340767/jafodowokozovonemotu.pdfIn PDF document text
    • https://xagixuruzetel.weebly.com/uploads/1/3/4/3/134319769/1563140.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/263774.pdfIn PDF document text
    • https://natulawud.weebly.com/uploads/1/3/4/3/134309077/bb20e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f87b133e7076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f9650656c602.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gozudutonak.files.wordpress.com/2020/11/bahubali_2_telugu_movie_1080p_free.pdfIn PDF document text
    • https://wejogude.files.wordpress.com/2020/11/niwasegini.pdfIn PDF document text
    • https://jasobegofur.files.wordpress.com/2020/11/wetipunotediketilatibosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fbdc93e-ab79-4022-a881-c83c03fc27a2/the_power_rhonda_byrne_online.pdfIn PDF document text
    • https://zopovamodutu.files.wordpress.com/2020/11/9534967896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5228d583-d156-4a98-aa9d-9ee111e82ae8/xeduwilisasoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaafaa23-edb7-4979-974d-84e80da20436/21723195906.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_off000068de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DE 5080 bytes
SHA-256: c62500814ffc714ef830e10de6b062bf168bd009d13fd33590c5ad284b6af7b1
font_01_sfnt_off00007a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A05 11592 bytes
SHA-256: dc6376a64173b595db4337165a74738bbc19dacaa856488488c1b51422e5740f

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