Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b0c1c6eb67d87…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 12:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8fc47c8f6d2d12b2d2acea93874feb22 SHA-1: 4057ad2c52950c52fbf07c7caf5fe2b763dd074f SHA-256: 5d8b0c1c6eb67d87af097a3ef6ee1fe56c22b92a90671152b700746a6a3106d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/coin-master-attack-block-hack-game-hack PDF link annotation
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000512f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x512F 24976 bytes
SHA-256: 4063dae262d85eea24d6e7b507ceaabcc113b13d26c6e04d148661f74504535c
font_01_sfnt_off00008ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB6 18008 bytes
SHA-256: 0ca0a7b3c48285d5504a250c0c9352f2a5009124704ab461b8ccbe1fad4bf069

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