Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e796e303680bf2…

MALICIOUS

PDF

35.3 KB Created: 2021-07-08 00:28:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c3d93112b394fcde47764c69c27ecd29 SHA-1: 25d22c6acd80f225da68981414449384792132f7 SHA-256: 88e796e303680bf2eaba3e1e5ffe6db94668829c53c77a61664bfde6063c737b
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/406889139/omplete-surveys-for-coin-master-free-spins-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-how-to-get-free-bc-tbc-obc_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/ninja-legend-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-mocap-dancing-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-for-ps4-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-999999-robux-tablet_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-printable-roblox-party-invitations_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-offsale-stuff-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/youtube-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-speed-hack-and-noclip-on-roblox-jailbreak-patched_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/tiktok-free-likes-app_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/tuto-hack-roblox-prison-life_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_002_off00003370.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3370 22496 bytes
SHA-256: fa439fe3f36ebc5d54167d8bf80bf59fb94a30759550847427d4cfa382a86f93
font_01_sfnt_off000065a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 18940 bytes
SHA-256: bdc8893512799730f1b068ee5fd80b7a78e0d8c39b33f88cf073f7d2f2ef98e9

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