Malicious PDF — malware analysis report

Static analysis result for SHA-256 108412b634724447…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 20:34:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fbc2d774b59a6f229ba9cb60f90d3df SHA-1: 82e23df89b7d8b7c7a156d1dd25359bdf7582335 SHA-256: 108412b634724447ff18ac4fde72dd628b99ac83dada91da7fa33220c50bbccc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious infrastructure, disguised as "game hacks" and "free generators". The heuristic firings strongly indicate a malicious redirector and a lure for game-related cheats. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to external sites for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/how-to-get-minecraft-for-free-on-tablet-game-hack In PDF document text
    • https://www.flexcable.com/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/robux-apk_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.flexcable.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.flexcable.com/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.flexcable.com/images/sites-to-get-free-robux_GM431946152.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_off00004b6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6A 24944 bytes
SHA-256: e03e116e8d888ceec5aea28f53c8372f098a99904efb6f1fe78cc830c7ceb6d3
font_01_sfnt_off000083c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C8 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD8 18104 bytes
SHA-256: 355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f

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