Malicious PDF — malware analysis report

Static analysis result for SHA-256 970e0762a5f41ac4…

MALICIOUS

PDF

48.0 KB Created: 2021-06-07 05:22:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8fe457e84e762a70e2d3660c21a9b7ea SHA-1: e1ccb36d9de0cbb8c69eed2998b230f0762cb74c SHA-256: 970e0762a5f41ac4074e6c23516b194f9025b0e4b7406d729265bbf9e15b7f67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for free Robux and game hacks. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-robux-no-human-verification-no-survey-no-download-2021-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt, likely leveraging social engineering to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/free-robux-no-human-verification-no-survey-no-download-2021-game-hack In PDF document text
    • http://schrichte.de/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/300-free-robux_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/veil-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005406.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5406 28020 bytes
SHA-256: b31b20d7e66b1d9faf12cd4a56786f1586d825ca214cceb584314411b2342cfd
font_01_sfnt_off00009382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9382 20136 bytes
SHA-256: b8f393b73ebaa0b24042a07a20e5c2057de2ad68b972bb541271a19d453cd8bb

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