Malicious PDF — malware analysis report

Static analysis result for SHA-256 632bcc25dcb96aa6…

MALICIOUS

PDF

78.6 KB Created: 2021-04-08 09:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b7bde1ad6f8ce605b3c3d5178ed43b8c SHA-1: 0b41af3cd5a7e7fb6ece1f217a3c84c965fee29c SHA-256: 632bcc25dcb96aa64487262e90f5b45dc0505bc94da6c3ff8327f71e33b0db7f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or redirectors, suggesting a link farm designed to distribute malware or phish for credentials. The document body, though heavily obfuscated, contains text related to 'spiritual warfare prayer', which is likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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
  • 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://maypoin.ru/strik?utm_term=que+es+una+oracion+de+guerra+espiritual PDF link annotation
    • https://cdn.sqhk.co/pujixefan/Dhdgdhd/swot_analysis_for_marketing_department.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/iilhjm3/zombie_survival_wasteland_mod_apk_1._2._25.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/how_to_type_into_a.pdfIn PDF document text
    • https://cdn.sqhk.co/mifijizudi/ihaihex/14269045134.pdfIn PDF document text
    • http://gikodarekegov.mywebcommunity.org/artisanal_gold_mining.pdfIn PDF document text
    • http://kepukarob.sportsontheweb.net/nixixatug.pdfIn PDF document text
    • https://cdn.sqhk.co/giwerezekobe/dja5Xij/jewukuvaretaxolidorute.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/ruganerozil.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/eGFzhdO/exchange_starbucks_gift_card_to_bitcoin.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/kekono.pdfIn PDF document text
    • http://filuxunokenobud.mygamesonline.org/asian_paints_texture_design_catalogue.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/phhoggO/suppress_synonym_business.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/54007872690.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/bhbjbja/contoh_format_account_receivable.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/4c8e4497-eaec-4d7a-b2ad-904b3715d29b/jajebapigejekosusugiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/ritugubedudov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/251cab05-9e73-44ce-b0fa-57636dad2f7a/3798870568.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/apache_maven_3._5._4_for_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/folder_colorizer_latest_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f1ba338-d71c-4f62-be99-1d79b5932b04/family_therapy_saginaw_mi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b5f57ae-3118-49cf-9f52-4a1650d0a24f/machine_learning_algorithms_for_disease_prediction.pdfIn PDF document text
    • http://guxejusoselota.myartsonline.com/the_republic_of_doyle_location.pdfIn PDF document text
    • http://nunavaxukozu.onlinewebshop.net/briggs_and_stratton_500_series_158cc_manual.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_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 5304 bytes
SHA-256: 0932791b507eab77926df3d05246bab996427e8e0201ad4a5acb75cbbaabc89c
font_01_sfnt_off00010737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10737 12080 bytes
SHA-256: fec1b66a5347ae519e451467222fe291f7091e896b77fe43dc20dd8c180025a0

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