Malicious PDF — malware analysis report

Static analysis result for SHA-256 844e02ae0889862f…

MALICIOUS

PDF

33.7 KB Created: 2021-06-30 04:05:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8f10194a588efb93929d69c1250d105 SHA-1: 2a9835e00ed1ccf1f65ae9500991d2a2810b2383 SHA-256: 844e02ae0889862f168a77d7d5cd8bda4afeae005e7f2916920c08f136c22fc5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links and text related to free game items and hacks for popular games like Roblox and Coin Master. The primary external URL, http://netcdn.co/app/431946152/free-game-called-roblox-game-hack, suggests a lure to download an application. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-game-called-roblox-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-trial_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-500-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hacks-for-mac-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-robux-free-no-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/lazyblocks-com-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-a-roblox-user-account-password-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-roblox-item-code_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-shoulder-friend_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/crazy-robux-hack_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_off00002d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6E 22240 bytes
SHA-256: 508a165aff604edce1055e2c21f5f2c77fb149c2f99fb564b124abd4123388a6
font_01_sfnt_off00005ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA1 19084 bytes
SHA-256: 24b0b66b13eab0ee06b78b8e5213be5bbacb546e9e5dafed89740a400484a4c2

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