Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a679e9bc0cba968…

MALICIOUS

PDF

47.1 KB Created: 2021-06-09 00:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2d82ced0125a58d266d9dee94959d5a SHA-1: 4c22b15d0516820ab4c766223b01692338d95274 SHA-256: 6a679e9bc0cba96871ed2ff54261b54ceb979eadf147df915453974b134379cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as game hacks and generators. The primary lure, 'How To Hack Grand Blox Auto On Roblox', points to a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lead users to potentially harmful content or further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-hack-grand-blox-auto-on-roblox-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/tiktok-free-like-and-views_GM835599320.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-coin-master-with-game-guardian_GM406889139.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_004_off000051d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D7 29400 bytes
SHA-256: 156ad67a8411c7bdbd424c983761640de75d83cdfed796009829c2424e65cb15
font_01_sfnt_off00009411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9411 18764 bytes
SHA-256: a22548ce86c32e7e76d09abe5af43b6f33189739557bc772c6f136762d6d1bc7

Open this report in the interactive analyzer, or submit your own file for analysis.