Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dad987636b699a1…

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 22:12:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1a64f87b076322798bc88b5c3900d4f4 SHA-1: dc17d9d77181c9b6aa7be789ec95d14111477fe8 SHA-256: 9dad987636b699a14a861a6e3212ac5963b5a1ceb1b05f951951ea2f5ee3655b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and hacks, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a phishing or redirection attack. No scripts were extracted, but the document's structure and embedded links indicate an attempt to lead the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/get-free-robux-without-human-verification-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/pubg-uc-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-2021-robux_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_off00005590.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5590 28540 bytes
SHA-256: b861e8700811368b039bd364cbf293200ef03a846be13a1eeb9c68b3531baf3d
font_01_sfnt_off0000957e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x957E 19224 bytes
SHA-256: d26e558c8d9f3aa3a60cf99b5f2b698b808b007009279a89da7a3b2992804aa3

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