Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c88a016697f117…

MALICIOUS

PDF

43.7 KB Created: 2021-05-19 13:28:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ca374cb87ec26398dce8633e760f4a8 SHA-1: 784fd9988b2cc346e37ee84228292805a865b16b SHA-256: 84c88a016697f117a52db514b3ffb38430f7908b653a2cca9c555b410dcb4698
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them, disguised as "game hacks" or "free currency". The primary malicious link redirects to `https://netcdn.xyz/app/431946152/how-to-get-free-followers-on-roblox-game-hack`, which is flagged as malicious redirector infrastructure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-followers-on-roblox-game-hack In PDF document text
    • http://loriginedupain.org/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://collectrobuxIn PDF document text
    • https://Buy.HoaxMC.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004834.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4834 28428 bytes
SHA-256: e074cdf2627b6fd54b18b9e4dc2717162f74ecd9341b68605cd7d17fbb21609b
font_01_sfnt_off000088b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B5 18216 bytes
SHA-256: d67de5b0316638aa6e49d387c798cf240806a637f86836bb818b6b87100bf276

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