Malicious PDF — malware analysis report

Static analysis result for SHA-256 15257706c0699144…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 07:56:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ccbbe8a39836245b3dacc2e1dd3049f3 SHA-1: a1868e82b0e44e30550deb19616b673afe25cb1a SHA-256: 15257706c0699144d78024acb2f9c84671bcf38ff0a39dd449368da4f11e52c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as 'Coin Master Free Spins 2021 No Human Verification'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this malicious intent. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to a malicious download or a credential harvesting page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-2021-no-human-verification-game-hack PDF link annotation
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-free-boy-face_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/get-free-roblox-robux-on-therobuxapp-com_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-get-400-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-raps-for-auto-rap-battles-for-roblox-list_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-free-items-event_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/robux-cheats-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-accsesoiri-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/hack-da-hood-tuto-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/best-free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-account-in-roblox-2021_GM431946152.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
stream_002_off000032de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DE 23328 bytes
SHA-256: d9d5e58442d0dcf93f7eabd9dcc841ddb6172de49b928418efd687327c05b38e
font_01_sfnt_off00006730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 19112 bytes
SHA-256: fb4821b270f07fea72f4a01c6c2f5a9088defca8ace128bd60f9e0b10e4ff732

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