Malicious PDF — malware analysis report

Static analysis result for SHA-256 613de54e9245888d…

MALICIOUS

PDF

41.2 KB Created: 2021-05-13 17:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 53921b837b0c3d1fcd0ac55744e10413 SHA-1: 64357aa00dd537b5f7aac06dbe11ec5ab46b81f0 SHA-256: 613de54e9245888d54672605e1f4137a0a823da1ea65031fae9261375e3150a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack lure, specifically targeting Roblox and Coin Master players. The embedded URL, https://netcdn.xyz/app/431946152/roblox-free-play-game-hack, likely serves as a redirector to a malicious site or download. While no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest a malicious intent to trick users into clicking the link, aligning with a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/roblox-free-play-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/give-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-stream_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_003_off000047ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EE 23648 bytes
SHA-256: 3cdf141dcbc65b90d4508c7d841e813c7e05021bfcc30ad81aa3f8c71510b442
font_01_sfnt_off00007dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCE 18512 bytes
SHA-256: eed476aa069bc09357c43ec056cace655c39995f669be6a5bb4491b7d3b62334

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