Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1f326e44904e51…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 05:21:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b06159017ef6507982acc244ea254289 SHA-1: 252dbdcc270b0bb83a6d081e81491fc983138375 SHA-256: bd1f326e44904e51e2f37297a97702affee1a3e139a90972a72991978da952f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-real-life-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malicious content or malware downloads.

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-get-free-robux-real-life-game-hack In PDF document text
    • https://loba.com.vn/public/upload/files/roblox-cheat-engine-bypassed-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coinmaster-com_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-account-roblox-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/google-coin-master-free-spins_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
font_00_sfnt_off00002eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB3 22200 bytes
SHA-256: 2860d59092762de53d57efa060cf7d7411c5d7f92655ca878e917b233221ac0e
font_01_sfnt_off00005ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFB 19180 bytes
SHA-256: 1f66aa14535a6083e4a9a6737f4c8a2926efdecccd5d8a9133fcf7941a664f72