Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab633db9e17f3c0…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 01:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 681617dcf0637f8731f148fcf96fc9cc SHA-1: bef21f8013c99217444d938bad01471dc691a6ce SHA-256: 4ab633db9e17f3c0f3ca8f52f95ec3efeb48b0430a04b1c9df05aa6c3963ef2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, which is identified as a malicious redirector. This lure is designed to trick users into clicking through to potentially harmful websites. The presence of multiple related URLs further supports the malicious intent of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-attack-hack-game-hack In PDF document text
    • http://generatorgallery.com.au/images/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://generatorgallery.com.au/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://generatorgallery.com.au/images/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/xray-hack_GM479516143.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://generatorgallery.com.au/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://generatorgallery.com.au/images/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://generatorgallery.com.au/images/roblox-com-free-robux_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
stream_003_off000049b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B2 25608 bytes
SHA-256: a915ac267adcd4ae79236a8d6c940859ed28cc0ecd48c57623e24d769986767d
font_01_sfnt_off0000830b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830B 17880 bytes
SHA-256: 64cbdad4b5c3b3a37694725247404ca4617731c1cde232b85c3c0be6b95e7409

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