Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ef4236643cf670…

MALICIOUS

PDF

34.3 KB Created: 2021-07-08 14:53:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2da8b6587804c053b3350f257c530a28 SHA-1: 02f496fe1a468ae546de27aa584abe1b1259e57f SHA-256: 23ef4236643cf670b177e4482cf347428d10b30c6ebbf8c4dbd4b394fe014799
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically for "Coin Master Hack No Verification". The document body and embedded URLs reinforce this lure, directing users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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-hack-no-verification-game-hack PDF link annotation
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-knives-on-murder-mystery-2_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/probloxicu-robux-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/does-cheat-engine-excute-scripts-into-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-apk-mod-unlimited-robux-free-download_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-hack-money-in-gas-station-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/robux-win-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-cool-free-tshirts_GM431946152.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
font_00_sfnt_off000031a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A8 22452 bytes
SHA-256: 5ae92889559de741c50959a55ea2610c6ca1937f0cc50d376cb084269d916fc1
font_01_sfnt_off00006392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 18140 bytes
SHA-256: 584bd634a741abf14746247beb71184038551534d821baf642793c5d967f1edd

Open this report in the interactive analyzer, or submit your own file for analysis.