Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ccc0c62b267661…

MALICIOUS

PDF

68.3 KB Created: 2021-03-07 09:31:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 27f7d3fa2c3074c2f0d211092021ff4b SHA-1: 500982d6173acce8e49e8bf56048bc54c0edc1c2 SHA-256: 80ccc0c62b267661998164af4faf0f0c539553a3fe2afaaa5ce9d4f36175678f
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the 'link farm' heuristic strongly suggest this document is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://dugedepap.ru/strik?utm_term=juki+ddl-5550+needle+size PDF link annotation
    • http://beautysss.site/braun_differential_equations_and_their_applicationspj4d4.pdfIn PDF document text
    • https://vutajavegev.weebly.com/uploads/1/3/4/0/134040502/5986032.pdfIn PDF document text
    • http://ihsteam.ru/kuwaravezidomoxu3wmw7.pdfIn PDF document text
    • https://fubareno.weebly.com/uploads/1/3/1/4/131482864/wetub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489733/normal_600c0508433dc.pdfIn PDF document text
    • http://tuderoba.getenjoyment.net/cortisone_shot_acne_aftercare.pdfIn PDF document text
    • https://wugupuvexiso.weebly.com/uploads/1/3/0/9/130969254/0dd0566.pdfIn PDF document text
    • http://topdouche.xyz/adharam_madhuram_song_pagalworldwgxt5.pdfIn PDF document text
    • http://1yamal.space/psychology_facts_about_human_behavior59cym.pdfIn PDF document text
    • http://wide-take.top/hacker_mod_for_minecraft_pejtq66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_6011b89eb0776.pdfIn PDF document text
    • http://wirelessinfo.ru/romeo_and_juliet_leonardo_dicaprio_trailer_itada5sm.pdfIn PDF document text
    • https://dijibelusubif.weebly.com/uploads/1/3/4/8/134871127/zuzepojekun.pdfIn PDF document text
    • https://sibemawiwojaro.weebly.com/uploads/1/3/4/8/134887292/guvefemokalux.pdfIn PDF document text
    • http://proita.space/fun_creative_writing_prompts_for_4th_gradegsyhv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecf2eb01-c5fe-4fe8-bb98-4a4137dc915f/23225917075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d49df62-3b2f-4db7-9518-60e6fde44938/64571347109.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/how_to_open_the_graco_stroller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e99d9cf9-b752-429e-98af-718f0999c3da/nodasejobanufatezoxigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf40ba9-ad4e-4c9b-b1b2-00bf8324e02b/59906608913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c3b710-5bca-464a-8da3-a1f0e6765fd4/bushnell_telescope_voyager_review.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_off0000ceb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB7 4916 bytes
SHA-256: 4b0a7cb707e7122ed54c45377a3dba1a846ab1a458d706363c13d7f01a7ddeac
font_01_sfnt_off0000df9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9D 10708 bytes
SHA-256: 5d8d6129f0d22723b2476cca7c077581af948cf21a5c411aadc0827b49318a9f

Open this report in the interactive analyzer, or submit your own file for analysis.