Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd46a5e6d131990…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 13:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9cf2d7013093af4aebf1d83ed2cf7fa5 SHA-1: 5660acdc51e27a78556005e2c47a233a31f19fee SHA-256: acd46a5e6d131990ad6b18c590dc447540d25c366c75f459c4c4d2634b41c5bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains embedded URLs and a visual download button lure, suggesting an attempt to trick the user into downloading malicious content. The ML classifier also flagged the PDF as malicious. The presence of multiple game-related download links indicates a likely attempt to distribute malware disguised as game cheats or tools.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-112-hacked-client-game-hack In PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pubg-uc-list_GM1330123889.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/pubg-uc-hack-without-human-verification_GM1330123889.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_004_off000050b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B3 25984 bytes
SHA-256: 8cd115db32de0932051f743e8d6e273d33f88532943c2602845af1472082a512
font_01_sfnt_off00008bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBA 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000956d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x956D 18216 bytes
SHA-256: 16c194dd9968a227e549d3d4e9eed93d6aad0237132eec7e3f1d3523d52888c1

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