Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ae4a179d7b344c…

MALICIOUS

PDF

73.0 KB Created: 2021-01-24 15:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5c81147d7253f2e0c8d673bd5e40e453 SHA-1: e154f2a8b109dfb3dc976e9a9432bedbb2bad3aa SHA-256: e2ae4a179d7b344cbd44dcdd60d0010b4683ae3489bb1cf07c5e88ccf6fe6d3d
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of external links, many pointing to disposable domains or Weebly subdomains, indicative of a link farm. The presence of a URL with 'utm_term=ninja+assassin+full+movie+free+watch' suggests a lure to attract users. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffnew.ru/123?utm_term=ninja+assassin+full+movie+free+watch PDF link annotation
    • https://mewuvirinikupu.weebly.com/uploads/1/3/4/5/134505229/22dca.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/eKgepej/spin_tops_mod_apk_unlimited_exp.pdfIn PDF document text
    • http://bestita.space/kenonumejvp9pl.pdfIn PDF document text
    • https://givodevivunafa.weebly.com/uploads/1/3/1/8/131871579/d42fb51c5f46.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/siliza_xezizezezebetoj_jiwodimewu.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/U12lmjh/gepefibefusadu.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/siwugopomirawukimiw9w.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/f032c9a1a.pdfIn PDF document text
    • https://cdn.sqhk.co/rijatazuga/gEjbExi/virtual_dj_sampler_sound_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/kixituvelil/ce4thae/sound_of_the_sea_movie_online_full.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/9hcWkih/falling_ball_equation.pdfIn PDF document text
    • http://natgood.space/15529173321h89p0.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/4jchjif/dotidosexepebunizege.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/farefasejikap/betternet_premium_apk_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/mathematical_reasoning_questions_for_jee_mains.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/numibepofejisivizowazozip.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_off0000e132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE132 5316 bytes
SHA-256: 7e9fc212b5ba8448405d7cad6c8e962e15037198f0cd5a01081df2d2a1440a89
font_01_sfnt_off0000f339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 10608 bytes
SHA-256: fb365739cf3c96beb14687a5e40ef7f708deeb012a71546827d2ba31a1615f8e

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