Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfaa08f43d5f5e7…

MALICIOUS

PDF

76.0 KB Created: 2021-03-20 00:04:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e7559f93f00920c31f299ab8f31dbf13 SHA-1: eebceac9cf80fc7d80663d157c9fe5dfff0294f1 SHA-256: 4dfaa08f43d5f5e7f9b24f1a62554ab460c0f39292206b996305ec289a7fe5cc
134 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URIs, many pointing to disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, appears to be a lure for 'real steel free movie download', indicating a social engineering tactic to trick users into clicking malicious links or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=real+steel+free+movie+download PDF link annotation
    • https://cdn.sqhk.co/kipaselofuza/idtebhb/42328852629.pdfIn PDF document text
    • http://fonujameritules.getenjoyment.net/brahmanda_purana_gita_press.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378151/normal_5fc9dcf47f746.pdfIn PDF document text
    • https://cdn.sqhk.co/donaxewon/jbghjQH/la_vida_recia_con_letra.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/iggi7Zl/equalizer_2_soundtrack_artists.pdfIn PDF document text
    • http://rutopadazemed.22web.org/11680643699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494648/normal_5fd76b8fb8284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450641/normal_602abae7666a4.pdfIn PDF document text
    • https://cdn.sqhk.co/buvoxinas/he5ge73/whatsapp_for_windows_10_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/merodobiweve/bidijmu/othello_character_development_essay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471256/normal_5fd8ea20e2b5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_601d709aeccbb.pdfIn PDF document text
    • http://tifunadepepix.22web.org/video_helper_plugin_safari.pdfIn PDF document text
    • http://jarowulizose.sportsontheweb.net/converter_into_word_file.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruzunol.rf.gd/losabafozifaj.pdfIn PDF document text
    • http://ludodugadigepez.rf.gd/endorsement_letter_sample.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/rikazuzafowazitogatekibi.pdfIn PDF document text
    • http://pejemevogoge.myartsonline.com/45092968135.pdfIn PDF document text
    • http://lukugebov.rf.gd/miya_bhai_song_lyrics.pdfIn PDF document text
    • http://beluguliwiwe.epizy.com/lagu_bertepuk_sebelah_tangan_pupus.pdfIn PDF document text
    • http://kezakixekinefa.rf.gd/86153475792.pdfIn PDF document text
    • http://kutezowifemiwe.epizy.com/cake_design_app_android.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_off0000eb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9A 5212 bytes
SHA-256: 030cc4e95e89d37b941ff8334da5338ac71487b323f4091343a6d975b9e27e16
font_01_sfnt_off0000fd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD59 10976 bytes
SHA-256: ad465ac129d2e0bbfab9442609a767b56d76aa440c07baef81326c68d56f5ee7

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