Malicious PDF — malware analysis report

Static analysis result for SHA-256 e998efcc7926bf0a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 17:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0068be13548d0a278974577001d791bd SHA-1: c4e056eb7ed84ba5971a046571ba87da21ead7b9 SHA-256: e998efcc7926bf0a277aa05a5708059232b6b00f50d622c6e5506430711b9089
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/406889139/coin-master-link-daily-get-free-spins-amp-game-hack PDF link annotation
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-get-free-robux-in-roblox-on-ios_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/roblox-hack-robux-free-deutsch-download_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/roblox-free-redeem_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/christmas-tree-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://lms.mabbaca.com/__statics/gudangsoal/files/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3224 22404 bytes
SHA-256: 48beb38640dc90f4e0b7a6d00be1697a2dcf6be371bfde8367e498b48dd167ba
font_01_sfnt_off000063df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 19024 bytes
SHA-256: a6b0f614ac39e0ea25c1b471df05359c20ad0f84406a652126b1030dae4d287b

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