Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cd1a67861865b2…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 10:36:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4dfece0deccbfd81907ddf2015231192 SHA-1: eec886178fc0aed2652d2c707bc710bb26a0c475 SHA-256: d6cd1a67861865b26d139e89451ff3d85123d2829482ebbe8e780d5fcc2645fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to websites offering game hacks and free items, such as 'roblox-gift-card-for-free-game-hack'. The ML classifier strongly indicated maliciousness, and the presence of these lures suggests a phishing or scam attempt. The document likely serves as a lure to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

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/431946152/roblox-gift-card-for-free-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id//repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/roblox-cheat-engine-online_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/roblox-avatar-customize-free_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-robux-shirts-images_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/claim-coin-master-free-spins_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
font_00_sfnt_off00002f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2E 22376 bytes
SHA-256: 5c936434cdbfa404fdae5ec6a36cb5a9c42cb58ce7dd38c9ee16f86ae0d6e2c6
font_01_sfnt_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 19048 bytes
SHA-256: 36d692819cd4052ea0b92a15cd52fa98a127e8d11e0430d7a0f06642361bda99

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