Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad16463f4aab043e…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 05:13:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 339ebf0ba3d3d13e1394133bb81f07d0 SHA-1: 06ce8f5ba897ee0396773d6d5ad115a1c88751a7 SHA-256: ad16463f4aab043e400ea1bc61887795f582615fb0892145df1551fdb6068de3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacks and free currency, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. The embedded URLs likely lead to sites that host further malicious content or attempt to exploit the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/coin-master-free-gift-cards-game-hack PDF link annotation
    • https://razredna-nastava.net/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/robux-miner_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-client_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/ways-to-earn-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B9 24896 bytes
SHA-256: e2108ca7f4cab345ff68bb9fdabd728a4318bc5ef0269899def8acc02aa91343
font_01_sfnt_off00008126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8126 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C04 17884 bytes
SHA-256: 1b54ec21ee4dc5c6875d1e8706b9f848bdb88ccbf1458105623327cd7a4376f0

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