Malicious PDF — malware analysis report

Static analysis result for SHA-256 6651a8f33fcf820d…

MALICIOUS

PDF

49.0 KB Created: 2021-06-04 04:55:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0f882f38bbf1ce9b05e49abb6fc87d2d SHA-1: 18296626cbb48856091cad8727ed1be7b0b4b4d2 SHA-256: 6651a8f33fcf820dfc6b538b5f39051d1c008f6e71a3c82a9678230b1bb6bd2a
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 0.9796

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/431946152/roblox-hack-top-model-game-hack PDF link annotation
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/robux-games_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.b2p2vrp.litbang.kemkes.go.id/repository/coin-master-spin-link-today_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_off00005339.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5339 26368 bytes
SHA-256: 7ade60439dfbace9c7167b77614ff6517f76db9035ea81c7d3146e5591e38075
font_01_sfnt_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 2984 bytes
SHA-256: 4adb8a917f49e7111d61a35b75f09762f191422f789e84659f5497848d60b01b
font_02_sfnt_off00009b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B5B 18728 bytes
SHA-256: 5cbe0ac8995dffc8e6eb56a43a92c88785724f49fb11df8d77227de8967fd57d

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