Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbd4b2b6fc7142d…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 08:06:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2411bec192fb5e97019e942b658e06b5 SHA-1: 34fcc7ec87ca887a7c7b49816f97fbbb0290d0da SHA-256: 2bbd4b2b6fc7142d8534204634410173d6dd68cb0df01bb712573bf5508ab972
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to external sites, including a known malicious redirector at http://netcdn.co/app/431946152/roblox-super-jump-cheat-engine-game-hack. These links are presented as lures for game hacks and cheats, indicating a social engineering attempt to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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/roblox-super-jump-cheat-engine-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/descargar-roblox-hackeado-android_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-change-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-script-injector-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-brick-bronze-roblox-where-to-find-exp-share-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/top-hacks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-2021-working_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-admin-hack-v3rmillion_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/admin-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/etok3-crab-roghoul-alpha-roblox-cheat-code_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spin-and-coins-links_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_002_off00002d74.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D74 22940 bytes
SHA-256: 1abaa68e07e73d9d97f4c72b41a623644a095c7a13af2d74e381cdb5cd049212
font_01_sfnt_off000060dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 19620 bytes
SHA-256: 14615326cfbe1c408f000fc0243f48e2141703fdac3bbef1aea1b110b7e2ebfa

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