Malicious PDF — malware analysis report

Static analysis result for SHA-256 64cc30f00aba5387…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 21:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f741e23bd519ea658447cc048b84ad6c SHA-1: d2b18f3c17ef2bda59e93d8d1b15e3b6d59b5cd0 SHA-256: 64cc30f00aba53871180863ab9c8eb065c54dc9907f202c77b64b073053640fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to a known malicious redirector, masquerading as a 'free generator' or 'game hack'. The document body and embedded links strongly suggest a social engineering lure to trick users into visiting malicious websites, likely for further exploitation or malware delivery. No scripts were extracted from this sample, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood 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.tw/app/406889139/coin-master-unlimited-spin-hack-mod-apk-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-send-a-roblox-fottage-of-someone-hacking_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-roblox-powers_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-r-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/make-your-own-roblox-skin-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-rpg-world-hack-script_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/5-roblox-edit-this-cookie-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coins-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-go-free-007_GM1094591345.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_off00002f43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F43 23156 bytes
SHA-256: 9f0d98221d2a61ada8fb2e596ff97cdff6062a58252fab1fc17cb2b8b68373bc
font_01_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 18876 bytes
SHA-256: 7e2ee907f2feac738be75e17c27693a65f159ea6ad788202b30771c529da622a

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