Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d4f54b4e7dec91…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 02:28:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0666c618cfbc936df82a7ec9d0cae70 SHA-1: e2721a5d2e6c157e00881b9f4f1333d7adbc3738 SHA-256: 33d4f54b4e7dec916f689f55ca58023506530dbd190387688848ea2472beb921
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free Robux and game hacks, as indicated by the document body and heuristic firings. It contains multiple links to a malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/fre-robux-today-game-hack, which is likely used to deliver a second-stage payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

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/fre-robux-today-game-hack In PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/comment-avoir-des-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-really-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-followers-no-human-verification-roblox_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/hack-robux-2021-inspect-element_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-robux-hack-2021-ios_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/roblox-characters-with-free-items_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/account-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/how-to-hack-a-old-roblox-account_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-guuudinfo_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/cheat-codes-for-legend-of-speed-roblox_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/robux-giver-no-survey-or-download-free-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-robux-2021-october_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/prison-live-on-roblox-was-hacked-in-deutsch_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://lms.mtsn3trenggalek.sch.id/__statics/gudangsoal/files/earnbux-us-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
font_00_sfnt_off00003264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3264 22124 bytes
SHA-256: fbca8d55d576b6a5eb3a142e8fe973ce88a05aab56f5fb4565a3283adc46694e
font_01_sfnt_off00006366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6366 19072 bytes
SHA-256: 46cfca18e06d620ca18af6b576997b97068e9f2425fa6aacc62e6f72c392fa15

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