Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c92d2f5484e9a27…

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 23:34:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e012aa125b9cfac01901be53b2065cdf SHA-1: 6ccdb270c4ad48c44c10ae3d2ae58a74ec278d8c SHA-256: 2c92d2f5484e9a275746a14f050771a2d0a91453ea9960605841a8af20abad27
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary redirector URL is http://netcdn.tw/app/431946152/games-on-roblox-that-give-you-free-robux-game-hack. The document body and embedded links strongly suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/games-on-roblox-that-give-you-free-robux-game-hack In PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-no-human-verification-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-ad-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/ccv3-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/ways-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-easy-way_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/descargar-hack-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/como-hackear-roblox-para-tener-robux-2021_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_off000031b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B9 22348 bytes
SHA-256: f7546aa9cf8aca4a5ae70d50370d5cb4142a9bd616f28c06d083c735024a4d03
font_01_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 19716 bytes
SHA-256: 3217d2b45e6aba390097db31ed4f489c97a69b2175e2ab7441deb7edbbce2f2f

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