Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26282bbb30ad08e…

MALICIOUS

PDF

46.6 KB Created: 2021-06-11 13:37:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a20d7b5f989a7389f021ed8241d82379 SHA-1: 111dec6e6130f5d1071f01200c2604ee1e440f3b SHA-256: e26282bbb30ad08e5f41b3744f62c14fdb7c0d14a5a2a8a3f7478e914b851c72
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 0.9832

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.tw/app/431946152/roblox-installer-for-android-free-game-hack PDF link annotation
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-often-pubg-uc-roots_GM1330123889.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/spin-coin_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-clothes_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
stream_004_off000053da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53DA 27196 bytes
SHA-256: f74085fc8610737badbc22a70409f4a48268d44bf0771614d22d580996e3aebb
font_01_sfnt_off000092f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F6 18572 bytes
SHA-256: 472e826a7e1ecfe5d1b071f470245e0a1b10fe9afd6b83a3e2ebf022ee729568

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