Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e47535446652be…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 08:14:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d31323a72158a2456e2679d672ef996a SHA-1: 13815e2cb97cc77e18d4e83bc16d68e36f76273d SHA-256: 04e47535446652bef7d221ed950b3a6169efbf6fd03d640010b4fa3c02168a76
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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
  • 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://netcdn.online/app/406889139/coin-master-hack-apk-35-11-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/pokemon-go-free-or-not_GM1094591345.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-50-tiktok-views_GM835599320.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/pokemon-go-gameplay-free-online_GM1094591345.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/tiktok-free-book-website_GM835599320.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F24 28092 bytes
SHA-256: 4360fcb1c5dcad6c2b6cb44b550c2d5afd60e2b3e2615aea82bd3267112e700f
font_01_sfnt_off00008eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDA 18308 bytes
SHA-256: c5fc180aa88a5b32589ea2c922f95b168e967df529a491ed8c3fe222e5420ead

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