Malicious PDF — malware analysis report

Static analysis result for SHA-256 b466a2eff76f55de…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 06:10:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34f6946b36f1d4bff0b0e32792380c18 SHA-1: 629acf86d769e51ee4fa21d7740e09ff298af87a SHA-256: b466a2eff76f55deb3b699f0163d5319b389e56d87c396149809cbd707ab4513
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports a phishing or redirection attempt. No scripts were extracted, but the document's structure and linked content suggest it is part of a campaign to trick users into visiting potentially harmful sites.

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/how-to-get-more-robux-game-hack PDF link annotation
    • https://au-ma.com/image/data/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/cheat-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/youtube-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-cheat-wizard-life_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-dominius-roblox_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/pokemon-go-free-incubator_GM1094591345.pdfIn PDF document text
    • https://au-ma.com/image/data/files/roblox-password-hacker-2021_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/hacks-de-roblox-para-tener-infinitos-robux-gratis_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • https://au-ma.com/image/data/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://au-ma.com/image/data/files/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • https://au-ma.com/image/data/files/can-roblox-detect-hacks_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
font_00_sfnt_off00002ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFE 22524 bytes
SHA-256: 914dc09acf915d163c928e03c635da2c44435c9a89b1933db6f4db82e5bb0c9f
font_01_sfnt_off00006247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6247 19016 bytes
SHA-256: 6aa127ff16da2a4872f87fb8bac29a815e7536eb149385d076fe202f8a47623a

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