Malicious PDF — malware analysis report

Static analysis result for SHA-256 842b0e61be0c4026…

MALICIOUS

PDF

45.4 KB Created: 2021-05-16 19:36:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dfee0d7b2445b7b29deadbd5b3c9aff7 SHA-1: 6afaab8773bf44b9e28b62a4b072e9bda3be1e8d SHA-256: 842b0e61be0c40268bb32971e3b537b607b29fb296d7fcf986f9ff7a8f750ff5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free in-game currency. The primary lure URL is https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/how-to-hack-roblox-accounts-2021-game-hack In PDF document text
    • http://ivanitskyvs.ru/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/rbx-free_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004754.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4754 25348 bytes
SHA-256: 7191b9d927eba118313ae20b6deee3650562e2e3603ab904a41589d8caef7a76
font_01_sfnt_off00008278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8278 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C62 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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