Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc7c0b22df31365…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 14:56:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89bac212172517ff6def52eb21c47f2f SHA-1: 0c2c303f10dcf5e1bbe9ef2dc10c7a0f906ed7f8 SHA-256: 1fc7c0b22df313659e50bef4ded1a2f540e09aafb82e360ef6989523604dd5bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains embedded URLs and a visual call-to-action, strongly suggesting a lure to download a malicious application. The ML classifier also flagged this PDF with high confidence. The document body and extracted URLs indicate a scam related to in-game currency or items, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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/406889139/free-spins-on-coin-master-app-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tiktok-free-100-views_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master_GM406889139.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_004_off00004f6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F6B 24636 bytes
SHA-256: f35b37a69f7ce8e1ed4c0140a0309737f25065befba869a07624781b843a7a9f
font_01_sfnt_off00008858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8858 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9243 17884 bytes
SHA-256: e35eb77d1e434a4a4433bf7d50e70c108b9e33857f20e35365727ea7a7255123

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