Malicious PDF — malware analysis report

Static analysis result for SHA-256 0890e62ac52d4a16…

MALICIOUS

PDF

36.1 KB Created: 2021-06-20 00:13:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2f8fbc596b5dd242d6b983852848cec3 SHA-1: 0843343cbbfb9698c2088c7cd57fd9518b2f378d SHA-256: 0890e62ac52d4a162da8b0ec7817cbc5d5c931188ad3c9f9dddfc629c108cd15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The document body and embedded URLs suggest a lure to download potentially unwanted software or malware. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/hack-download-mega-innovation-roblox-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/haktuts-coin-master-today_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_off000033da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DA 22476 bytes
SHA-256: d76c5556ade0653a952170a2f962dd505f25dafdd365d4d4d7cc6298777d251f
font_01_sfnt_off00006614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 19696 bytes
SHA-256: f529cfce64ebbd5a6abb86d3750508c412b82223e3be50e9ff676d35d0628920

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