Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c1241cdb465e844…

MALICIOUS

PDF

35.6 KB Created: 2021-06-22 04:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 69cf6f6317621624a8cf86c87638fcec SHA-1: c809dd3b383189f5d7313a43bf548cc53710449e SHA-256: 5c1241cdb465e844a026e2bf7f3a0b79e769548ef357f8f04432a9acdd05785c
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.co/app/406889139/free-coin-master-spins-for-today-game-hack PDF link annotation
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/hack-jailbreak-2021-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/roblox-free-robux-promo-codes-list_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/tiktok-free-likes-net_GM835599320.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/join-my-roblox-group-for-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.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
stream_002_off000034c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34C2 22680 bytes
SHA-256: 9986f66a85fa4010f3f88a612c3d50f6c206f4b4b76e093ed1dd22f071f77295
font_01_sfnt_off0000678f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 18528 bytes
SHA-256: 7516c489b1b881653228620cc2b0dc971f4c0cc04e000053424a555de8493b8f

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