Malicious PDF — malware analysis report

Static analysis result for SHA-256 471fc0194328900b…

MALICIOUS

PDF

48.0 KB Created: 2021-02-24 09:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2ce950fec6c759142ee448d315f0bd46 SHA-1: 215e7d1a625d9dab3a46a0091b9ce2d62e56af15 SHA-256: 471fc0194328900bcf693458b04bd6188e4c2adf228ff29ca02ebedbc24e8123
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7228

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://druttle.ru/strik?utm_term=frases+de+gabriel+garcia+marquez+amor+en+los+tiempos+del+colera PDF link annotation
    • http://magicwoolshop.com/dicionrio_acordes_violoyrdwd.pdfIn PDF document text
    • http://hookup681.site/81168610476bpl7h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368229/normal_5ff40fd1ac02d.pdfIn PDF document text
    • http://ketotreno.buzz/4040271273e7y78.pdfIn PDF document text
    • http://iwhite.space/jsw_profile_sheet_sizedfyoa.pdfIn PDF document text
    • http://twitter-center.com/zuforesotomutimigomod8g9m.pdfIn PDF document text
    • http://winoraama.website/its_my_life_mp3_song_download_pagalworlddl043.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/facebook_data_analytics_toolsugl0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477877/normal_600a1d983c767.pdfIn PDF document text
    • http://baby-slings.ru/36444786507rhfog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_60170dd8293d6.pdfIn PDF document text
    • http://naturfresh.space/piwafobojoqed18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369640/normal_601ed097ad4e4.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/joint_distribution_of_2_uniform_random_variables.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/expressed_and_implied_powers_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/definition_of_affine_transformation.pdfIn PDF document text

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