Malicious PDF — malware analysis report

Static analysis result for SHA-256 382f02ec2cbe9895…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 04:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3a61664bae98da2847c6efef63636048 SHA-1: 522c698e8e1cd1b512fad79f0afde7d07a0fcf85 SHA-256: 382f02ec2cbe9895ae07a8efc26ac8054378934e0e6029e82e47172ea8cba501
166 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains multiple links to external websites, some of which are hosted on disposable domains and appear to be part of a link farm designed to deceive users. The document body, though heavily obfuscated, suggests a lure related to 'Snes game genie code book pdf', aiming to trick users into visiting these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://vilenefex.ru/123?utm_term=snes+game+genie+code+book+pdf PDF link annotation
    • http://wonnaturila.space/connect_the_dots_online_gamebv94s.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/the_girl_with_the_dragon_tattoo_film_analysis.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/mawejabamudobozepenu.pdfIn PDF document text
    • http://tuimag.ru/technical_drawing_tools_listnrlgp.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/does_arthritis_come_from_cold_weather.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/a_peoples_history_of_american_empire_chapter_summaries.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/rivotigivuj.pdfIn PDF document text
    • http://tezibif.mygamesonline.org/fender_mustang_gtx100_modelling_combo_amp.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/66059667302.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/tepemi.pdfIn PDF document text
    • http://hangookoil.ru/lsc_smart_connect_applicationmkion.pdfIn PDF document text
    • http://7lessons.space/xotufo4raic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bisaxofawalep.epizy.com/mary_poppins_musical_supercalifragilisticexpialidocious_karaoke.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/22291438621.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/78638006935.pdfIn PDF document text
    • http://livirava.atwebpages.com/84709455435.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/what_is_the_average_salary_for_a_spanish_interpreter.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_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 5656 bytes
SHA-256: 6b82b7546eff582991e3262ae588e197e22db881189dfa26ea4dd1e059c6e455
font_01_sfnt_off0000fe34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE34 11300 bytes
SHA-256: e48141a9597786fe4cb7cf3f816a116671af4f58843dafe53b85eb54a19b9c04

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