Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b45c7252185b88…

MALICIOUS

PDF

45.4 KB Created: 2021-06-07 13:42:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b941b9a81309724e68ab9c26f8950a9f SHA-1: 65630b1a95f7fdc71237f912eb3f27be0bf3a9a3 SHA-256: 93b45c7252185b884e6bb8c6eae81bf423a4a0bcaed7ba9059529f2673895281
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack', directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of embedded URLs and the nature of the lure strongly suggest a phishing or malware distribution attempt.

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/best-roblox-jailbreak-hack-2021-mod-menu-game-hack PDF link annotation
    • http://sbm-nn.ru/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-on-android-tablet_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-in_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-links-for-coin-master_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
stream_004_off000052f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F5 24524 bytes
SHA-256: c9c1adac54fa68bc0100683c567bbed25b90c80c2b12397afebb28ead13da0fa
font_01_sfnt_off00008b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B09 19484 bytes
SHA-256: d801d7edc8e4c831a0c0bc1d077941b2b034f74355e3e609005c4ec923beb9f4

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