Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2d1c10190e71fc…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 23:25:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2820d45523932827cf7680bf5f64c29e SHA-1: fd46bebdcc735116283f58be99b7b8f147736cd1 SHA-256: 8b2d1c10190e71fca0ffc343c9fed118615f324a57c84f7ba935625734a4478f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, promising free Robux and game hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts numerous other PDFs with similar deceptive titles. The document's content and heuristic firings strongly indicate a phishing or scam campaign designed to lead users to potentially malicious sites or 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/games-on-roblox-that-actually-give-you-free-robux-game-hack In PDF document text
    • http://sttlets.education/senayan/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-hack-pastebin-all-games_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-expert-sripters-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/wayfort-alpha-free-moneu-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hilton-hotels-hack-roblox-vermilion_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-it_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/click-teleport-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-getrobux-gg_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-speed-hack-youtube_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-use-redeemed-cards-on-roblox-no-hacks-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hack-de-roblox-dinero-infinito-en-rocitizens_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_off00003042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 22488 bytes
SHA-256: 4eb5f06299fa150071dfa10e742b1df6c01eb68805a97d8cab53921b66af9aa1
font_01_sfnt_off00006292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6292 19896 bytes
SHA-256: e94396422501d41e291e2bf1e01d1da6063f36f8d67496113fdde0608d70973e

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