Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12e6acd46b4568e…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 00:50:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc14d2ddd277ee5d03bf628ed7e1b5e6 SHA-1: e88bbf3436034110e603617460265ad76819ee0a SHA-256: f12e6acd46b4568e25535eee4a8c67e83da409dadd09a46bfcf5da47baa2e86b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator' or 'game hack' lures. The primary redirector URL identified is http://netcdn.co/app/431946152/real-how-to-get-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

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/real-how-to-get-free-robux-game-hack In PDF document text
    • https://www.flexcable.com/images/robux-free-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/robux-free-hack-human-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/dowload-free-robux-hack-for-free_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/how-to-get-free-minigun-in-roblox-human-vs-zombies_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-game-hunter_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
stream_002_off00002eb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EB9 22228 bytes
SHA-256: db0ccaae227df02c0f6918235bd7dc16e7d3435db058252d68235a79a77c87a9
font_01_sfnt_off00006016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 18872 bytes
SHA-256: c9825310a6d76cbee4ee1e1aa4fa4a796c94b68a4abb8440a1bd4c82e4026937

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