Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ebd904fb3ee8ae…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 17:00:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 11c45bd057011689a28a7066f766dca2 SHA-1: 5175b5d6d37ca49e74dad367923c0176566c0eb4 SHA-256: 33ebd904fb3ee8aec204541e5b2b5ff76b0e24726624c701cf804b7ac4a90988
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure appears to be related to Minecraft and Roblox. The presence of embedded URLs and the ML classifier strongly indicate malicious intent, likely to lead the user to a site that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-games-online-free-no-download-game-hack In PDF document text
    • http://lib.kesdammedan.ac.id/repository/hack-for-roblox-wont-get-banned_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/como-puedo-hackear-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-ro-ghoul-cheat-rc_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-ban-people-from-servers-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-promo-codes-december-2021_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/cheat-engine-roblox-windows-8_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/increible-hack-robux-pastebincom-80b1sjzp-davidtoasa_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-free-group-shop_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3080 22304 bytes
SHA-256: 201655477d707aa19866b09b395f72c9337dbdff0cb272df7137cc630871ac72
font_01_sfnt_off000061d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D1 18840 bytes
SHA-256: 0f63a3180c461c096085b6d31a5d28a282e0ae722758aa9b018515a408144b72

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