Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ad8569a1412fc5…

MALICIOUS

PDF

42.1 KB Created: 2021-06-03 23:06:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 90ca070c5910d299a3781074fb754357 SHA-1: 65e947ce9eafa1b643505a5736d372e07269de72 SHA-256: 64ad8569a1412fc549c1819cbf99b3f885680c6389dca05b7d6aead002cb3c59
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are designed as 'link farms' for game hacks and free in-game currency. The primary lure appears to be for Coin Master and Minecraft, with a specific URL pointing to a 'try-coin-master-hack-game-hack' page. The presence of a 'password-protected archive handoff' heuristic suggests that the linked content may be an encrypted payload or lead to a phishing site designed to harvest credentials. No scripts were extracted, but the extensive link farm and lure tactics indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/try-coin-master-hack-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-glitch_GM431946152.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_off00004bd1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD1 24128 bytes
SHA-256: c3e3461a22edf3dc4fe0f9c488e8ed815237675c77272b757737e94e9b31f277
font_01_sfnt_off000082d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D1 17896 bytes
SHA-256: 69877474bef33d72b07b573334d79013cb06c4bbe876475c0fbcbcb28557375b

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