Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2c64f62476984c8…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 23:13:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 427f749f9dc051c5ade24605a440c543 SHA-1: b5d1b85b1407f2fb8c54a4c07e034919ed327f4c SHA-256: a2c64f62476984c8444ab755ff3caf20f849e227a6f27d9933b458c945d46993
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as game hacks and free item generators for Roblox. The primary lure URL is http://netcdn.co/app/431946152/how-to-hack-without-downloading-anything-roblox-game-hack, which likely leads to a further malicious download or phishing page. The document's structure and embedded URLs strongly suggest a social engineering tactic to trick users into visiting malicious sites.

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.co/app/431946152/how-to-hack-without-downloading-anything-roblox-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/denis-how-to-get-free-robux-i-39_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hero-havoc-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-how-to-get-a-free-dominus-hat-2021-australia_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/clone-tycoon-2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-rpg-roblox-items_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-eye-poppers-free-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-gui-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-away-with-hacking-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/cheat-engine-la-roblox-para-hilesi-nasil-yapilir_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/jailbreak-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-god-yourself-in-roblox-not-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-dbz-rage-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-grab-points_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-attack-doge-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/fly-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/cheat-code-for-camera-recorder-in-slender-reborn-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/como-ser-hacker-en-house-of-keys-en-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-jailbreak-money-hack_GM431946152.pdfIn 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
font_00_sfnt_off000030e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E3 22088 bytes
SHA-256: 7218292b9f24920cd379420e47c5b6432b631e001c782cb4daea138632e817a5
font_01_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 20068 bytes
SHA-256: f81fdce433c97e7d25e3a48a4fb9a33d99548e4173e5519c4977bb4b00811ba4

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