Malicious PDF — malware analysis report

Static analysis result for SHA-256 f362d5e2b08d6e0d…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 05:22:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dee857d15d10e8439e185165081d4323 SHA-1: de49405ebbf8cd76933c068ebde5e32743ca08a2 SHA-256: f362d5e2b08d6e0d777562442b844d4621ffa770558ad867254b619d8f2761c2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites that promise game hacks and free in-game currency, a common lure for phishing or scam operations. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm designed to attract users through search engines. The primary URL, https://netcdn.online/app/406889139/can-you-really-hack-coin-master-ios-game-hack, is likely the destination for these lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • 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/can-you-really-hack-coin-master-ios-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-minecraft-survival-server_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_off000053e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E5 25840 bytes
SHA-256: 41f20cd2f3189a4a22b70a9758786423764ea83bb9008f7d84f1b4cdfe41ddd8
font_01_sfnt_off00008da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA9 19348 bytes
SHA-256: 5e540cc8c0919aaabdbab6ab6c3ff121fb65fcc709011f54c089f08f43018661

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