Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d200441d1e3700…

MALICIOUS

PDF

45.6 KB Created: 2021-06-04 04:55:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 49cbeb14c38dc4709f9b0da0478b0b10 SHA-1: b117af3c6cf904681c9d5b740a4d39194a251399 SHA-256: 77d200441d1e3700409304266630b029bcd6b71c71507d45451936a4d11fa31c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though heavily obfuscated, contains references to game hacks and the same URL. The presence of embedded URLs and the overall structure suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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 https://netcdn.online/app/406889139/coin-free-master-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-often-pubg-uc-flare-up_GM1330123889.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-cheats_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F96 24740 bytes
SHA-256: db60cafccd6fb050e30ec8945bfb038dd549760446a4e620aac631adb13af940
font_01_sfnt_off0000875d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875D 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9148 17712 bytes
SHA-256: d81df6b65cf0bb045415549e23d0eb9d7e4a9ed7c869613af9af95d8dd41029c

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