Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcbbbd78e6efecf6…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 04:27:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6582a1804d48764975bf8f8f5d2e64d7 SHA-1: 535808cc6d30f7aa6686b4538b55a77045ccd2ce SHA-256: bcbbbd78e6efecf681f76ed42dd847035f655bb788125413dd6fce2a2f2c46da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and generators. The primary redirector URL is http://netcdn.co/app/431946152/free-roblox-hacker-app-game-hack, which leads to further malicious PDF files. The document body and heuristics indicate a lure for users interested in game cheats, likely to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs are the primary indicators 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/free-roblox-hacker-app-game-hack In PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/booga-booga-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/roblox-free-items-list_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/csgo-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/proxo-roblox-hack_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/roblox-no-scope-sniping-hack_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/how-to-get-free-robux-scratch_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/can-you-get-free-robux-from-creating-a-game_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/minecraft-pe-hacks_GM479516143.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_off00003139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3139 22152 bytes
SHA-256: a87c3c02b6f86c808a42bdcd3f09a251779a4b11671d254ba0e40f211b020592
font_01_sfnt_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 18996 bytes
SHA-256: e126a251ade932a4a7ab629dedf147eb38358aab7c0ad76ac778b7758633806d

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