Malicious PDF — malware analysis report

Static analysis result for SHA-256 b187db2991f5fa8c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 19:34:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d7fd86f5987346b583fa26a7ce61c503 SHA-1: 6868ce78a6fb2a9c5790940e1eae04c80b138992 SHA-256: b187db2991f5fa8c1ee1bc25b040f3c23806f08fea069094675eba9be74315de
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 0.9980

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/479516143/minecraft-pe-free-apk-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/free-robux-counter-for-roblox-apk_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-models-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-xbox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-catalog-free-pastebin_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-rixty-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-meme_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/stickmasterluke-free-robux-game_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/pubg-uc-xtrcom_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-download-app-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/my-roblox-girlfriend-cheated-on-me_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-aimbot-cheat-table_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
font_00_sfnt_off000032f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F9 22584 bytes
SHA-256: 3325fcc95d691acab2821f2bc06b32376da02000e8d04350c9e0ea90ffdc0bba
font_01_sfnt_off000064f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F3 18356 bytes
SHA-256: 3de400347f681560e80a0db370a0d77c7f67bbb464d37fe0ec9a1adb3b0b5f9d

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