Malicious PDF — malware analysis report

Static analysis result for SHA-256 65eec79608e5dfb7…

MALICIOUS

PDF

49.8 KB Created: 2021-05-11 04:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fc4cac7a8f36e3fe3fbbfe8db2ec2405 SHA-1: 07b39db9f1b16805ad6472c57faff3b2021a056f SHA-256: 65eec79608e5dfb713f4ff7ab179db07369f5cb623f93f2a8f8bb632b9b1b2f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure for free Robux and game hacks, directing users to the URL https://netcdn.xyz/app/431946152/free-robux-generator-2021-game-hack. This URL is highly suspicious and likely serves as a redirector to a malicious payload or phishing page. The presence of numerous other game-related PDF links further supports a social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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.xyz/app/431946152/free-robux-generator-2021-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE3 28300 bytes
SHA-256: b7aadc5637ce361b6d3f39d82fd54efda09993c5a9fc82a102bafbe6d16cc2f1
font_01_sfnt_off00008cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF9 7508 bytes
SHA-256: a652790a5c37f00fd06ebf38e669da0dec20ec27c7dc64d52605a1648d6882bb
font_02_sfnt_off00009f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F14 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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