Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be9ab0b36da7cba…

MALICIOUS

PDF

45.9 KB Created: 2021-05-10 21:35:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ca59e5d849ba4d7ff6d24fcad27a639f SHA-1: 5bb1ecb5eaa39eb2c806ba3dab6d8aa69b8be207 SHA-256: 2be9ab0b36da7cbac034522835fa4225e034b7b1cea367bf20bea011743e0204
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them, disguised as game-related content. The primary link redirects to a known malicious infrastructure, indicating a phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in free game items to lead them to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/robux-com-free-robux-game-hack In PDF document text
    • http://karolinaherrera.com/images/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://karolinaherrera.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-spins-on-coin-master-2021_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_off0000491f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491F 26016 bytes
SHA-256: e6433eb92ac58cd4b010b15add380b186b3288a40c715b7ada9628334df7da5e
font_01_sfnt_off0000842c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000913d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913D 18276 bytes
SHA-256: 15a0db03ecad41b32ad15729058012b5ee1d917146ec7af3e780186d41394abc

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