Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c17701efd4c342…

MALICIOUS

PDF

45.7 KB Created: 2021-06-08 16:42:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 16d71e59f5a558346b15cbdd592670bb SHA-1: 6c0f46f2ae2013eb5825fb320b9b31fb6b587dbd SHA-256: b0c17701efd4c3422781eff3cb2c98bdc1bd8d7a4899ff6eb07b73698ac7cb46
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains references to 'Lazybux Com Free Robux' and the same URL found in the heuristics. This indicates a phishing or scam attempt designed to trick users into visiting a potentially malicious website.

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.tw/app/431946152/lazybux-com-free-robux-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-by-watching-ads_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_004_off00005330.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5330 26344 bytes
SHA-256: 6579166b90030cee4d0ed7440f92e2fea144a2402721b29bcedd604a445dfa51
font_01_sfnt_off00008e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E98 18764 bytes
SHA-256: 1e73dac54beca20c03aa8f406c40d9bd1ded1aafe37d88557bf7dd1339d2de22

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