Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4854cb1c4244202…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 17:47:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3d192d192824aa21067c866ae7474ab1 SHA-1: e376da2073420f217a63dc7c64ce9898af9bccc2 SHA-256: b4854cb1c42442024e7fa8e161545672f2b937a270baf04f42a6caf54108e58b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free spins, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of these lures indicates an attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded links suggest it's designed to lead users to a malicious landing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-coin-master-spin-app-game-hack PDF link annotation
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/tiktok-free-followers-2021_GM835599320.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/how-to-get-free-robux-2021-mac_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/android-hack-para-tener-robux-en-roblox_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/pokemon-go-free-joystick-android_GM1094591345.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/free-roblox-accounts-ebay_GM431946152.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id/repository/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muliadarmapratama.ac.id/perpus.muliadarmapratama.ac.id//repository/coin-master-free-spin-link-app_GM406889139.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
font_00_sfnt_off000033e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E3 22992 bytes
SHA-256: 38e24bc8aa7e98853ad4a9847973d421c3f0e18e5a66c1c26b8fce93b095b66b
font_01_sfnt_off00006763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 18176 bytes
SHA-256: c20278108810162b1b694c6666ef9c6da72e60db33a50c207a00b3484d1a6bb3

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